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As filed with the Securities and Exchange Commission on April 8, 2005

Registration No. 333-            

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM S-4
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933

TENET HEALTHCARE CORPORATION
(Exact Name of Registrant as Specified in Its Charter)

NEVADA
(State or Other Jurisdiction of
Incorporation or Organization)		   8062
(Primary Standard Industrial
Classification Code Number)		   95-2557091
(IRS Employer
Identification Number)

13737 NOEL ROAD
DALLAS, TEXAS 75240
(469) 893-2200
(Address, Including Zip Code, and Telephone Number, Including
Area Code, of Registrant's Principal Executive Offices)

E. PETER URBANOWICZ
GENERAL COUNSEL
TENET HEALTHCARE CORPORATION
13737 NOEL ROAD
DALLAS, TEXAS 75240
(469) 893-2200
(Name, Address, Including Zip Code, and Telephone Number, Including Area Code, of Agent for Service)

With a copy to:

STEVEN B. STOKDYK
SULLIVAN & CROMWELL
1888 CENTURY PARK EAST, SUITE 2100
LOS ANGELES, CALIFORNIA 90067
(310) 712-6600

        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: AS SOON AS PRACTICABLE AFTER THIS REGISTRATION STATEMENT BECOMES EFFECTIVE.

        If the securities being registered on this form are being offered in connection with the formation of a holding company and there is compliance with General Instruction G, check the following box.    o

        If this form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act of 1933, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.    o

        If this form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.    o

CALCULATION OF REGISTRATION FEE

Title of each class of
securities to be registered

   Amount to be registered
   Proposed maximum offering price
   Proposed maximum aggregate offering price(1)
   Amount of registration fee(1)
9.250% Senior Notes due 2015   $800,000,000   100%   $800,000,000   $94,160
(1)
Estimated solely for the purpose of calculating the registration fee pursuant to Rule 457(f) under the Securities Act.

        The Registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until this registration statement shall become effective on such dates as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

SUBJECT TO COMPLETION, DATED APRIL 8, 2005.

The information in this prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities law of any state.

PROSPECTUS

LOGO

$800,000,000

TENET HEALTHCARE CORPORATION

Offer to exchange its 9.250% Senior Notes due 2015, which have been registered under the
Securities Act of 1933, for any and all of its outstanding 9.250% Senior Notes due 2015

The exchange offer and withdrawal rights will expire at 5:00 P.M.,
Eastern time, on                        , 2005, unless extended.

        We are offering to exchange up to $800,000,000 aggregate principal amount of our new 9.250% Senior Notes due 2015, which have been registered under the Securities Act of 1933, referred to in this prospectus as the new notes, for any and all of our outstanding 9.250% Senior Notes due 2015, referred to in this prospectus as the old notes. The new notes and the old notes are collectively referred to in this prospectus as the "notes."

        We issued the old notes on January 28, 2005 in a transaction not requiring registration under the Securities Act. We are offering you new notes, with terms substantially identical to those of the old notes, in exchange for old notes in order to satisfy our registration obligations from that previous transaction. If you fail to tender your old notes, you will continue to hold unregistered notes that you will not be able to transfer freely.

        See "Risk Factors" starting on page 5 of this prospectus for a discussion of risks associated with the exchange of old notes for the new notes offered hereby.

        We will exchange new notes for all old notes that are validly tendered and not withdrawn before expiration of the exchange offer. You may withdraw tenders of old notes at any time prior to the expiration of the exchange offer. The exchange procedure is more fully described in "The Exchange Offer—Procedures for Tendering."

        The terms of the new notes are identical in all material respects to those of the old notes, except that the transfer restrictions and registration rights applicable to the old notes do not apply to the new notes. See "Description of New Notes" for more details on the terms of the new notes.

        We will not receive any proceeds from the exchange offer.

        There is no established trading market for the new notes or the old notes. However, we intend to apply for listing of the new notes on the New York Stock Exchange.

        The exchange of old notes for new notes should not be a taxable event for United States federal income tax purposes. See "Certain Federal Income Tax Considerations."

        All broker-dealers must comply with the registration and prospectus delivery requirements of the Securities Act. See "Plan of Distribution."

        Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these notes or passed upon the accuracy or adequacy of this prospectus. Any representation to the contrary is a criminal offense.

                        , 2005

        No dealer, salesperson or other person is authorized to give any information or to represent anything not contained in this prospectus. You must not rely on any unauthorized information or representations. This prospectus is an offer to sell only the notes offered hereby, but only under circumstances and in jurisdictions where it is lawful to do so. The information contained in this prospectus is current only as of its date.


TABLE OF CONTENTS

SUMMARY   1
RISK FACTORS   5
USE OF PROCEEDS   12
SELECTED FINANCIAL INFORMATION   12
THE EXCHANGE OFFER   15
DESCRIPTION OF NEW NOTES   23
DESCRIPTION OF OLD NOTES   32
CERTAIN FEDERAL INCOME TAX CONSIDERATIONS   32
PLAN OF DISTRIBUTION   32
VALIDITY OF THE NOTES   33
EXPERTS   33
AVAILABLE INFORMATION   33
INCORPORATION BY REFERENCE   34

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SUMMARY

        The following summary is qualified in its entirety by the more detailed information, including our consolidated financial statements and related notes, included or incorporated by reference in this prospectus. Unless the context otherwise requires, the terms "Tenet," "we," "us" and "our" refer to Tenet Healthcare Corporation and its subsidiaries.

Tenet Healthcare Corporation

        We, through our subsidiaries, own and operate acute care hospitals and related health care facilities. At December 31, 2004, we operated 80 general hospitals with 19,668 licensed beds, serving urban and rural communities in 13 states.

        Our principal executive offices are located at 13737 Noel Road, Dallas, Texas 75240, and our telephone number is (469) 893-2200. As of March 31, 2005, we and our subsidiaries employed approximately 82,600 people nationwide.

The Exchange Offer

        On January 28, 2005, we completed the private offering of $800,000,000 aggregate principal amount of 9.250% Senior Notes due 2015. As part of that offering, we entered into an exchange and registration rights agreement with the initial purchasers of the old notes in which we agreed, among other things, to deliver this prospectus to you and to complete an exchange offer for the old notes. Below is a summary of the exchange offer.

Old notes   9.250% Senior Notes due 2015

New notes
 
Notes of the same series, the issuance of which has been registered under the Securities Act of 1933. The terms of the new notes are identical in all material respects to those of the old notes, except that the transfer restrictions and registration rights relating to the old notes do not apply to the new notes.

Terms of the offer
 
We are offering to exchange a like amount of new notes for our old notes in denominations of $1,000 in principal amount and multiples thereof. In order to be exchanged, an old note must be properly tendered and accepted. All old notes that are validly tendered and not withdrawn will be exchanged. As of the date of this prospectus, there are $800,000,000 principal amount of 9.250% Senior Notes due 2015 outstanding. We will issue new notes promptly after the expiration of the exchange offer.

Expiration time
 
The exchange offer will expire at 5:00 P.M., Eastern time, on                 , 2005, unless extended.
         

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Procedures for tendering
 
To tender old notes, you must complete and sign a letter of transmittal in accordance with the instructions contained in it and forward it by mail, facsimile or hand delivery, together with any other documents required by the letter of transmittal, to the exchange agent, either with the old notes to be tendered or in compliance with the specified procedures for guaranteed delivery of old notes. Certain brokers, dealers, commercial banks, trust companies and other nominees may also effect tenders by book-entry transfer. Holders of old notes registered in the name of a broker, dealer, commercial bank, trust company or other nominee are urged to contact such person promptly if they wish to tender old notes pursuant to the exchange offer. See "The Exchange Offer—Procedures for Tendering."

 
 
Letters of transmittal and certificates representing old notes should not be sent to us. Such documents should only be sent to the exchange agent. Questions regarding how to tender and requests for information should be directed to the exchange agent. See "The Exchange Offer—Exchange Agent."

Acceptance of old notes for exchange; issuance of new notes
 
Subject to the conditions stated in "The Exchange Offer—Conditions to the Exchange Offer," we will accept for exchange any and all old notes which are properly tendered in the exchange offer before the expiration time. The new notes will be delivered promptly after the expiration time.

Interest payments on the new notes
 
The new notes will bear interest from the most recent date through which interest has been paid on the old notes. If your old notes are accepted for exchange, then you will receive interest on the new notes and not on the old notes.

Withdrawal rights
 
You may withdraw your tender at any time before the expiration time.

Conditions to the exchange offer
 
The exchange offer is subject to customary conditions. We may assert or waive these conditions in our sole discretion. If we materially change the terms of the exchange offer, we will resolicit tenders of the old notes. See "The Exchange Offer—Conditions to the Exchange Offer" for more information.

Resales of new notes
 
Based on interpretations by the staff of the Securities and Exchange Commission, or SEC, as detailed in a series of no-action letters issued by the SEC to third parties, we believe that the new notes issued in the exchange offer may be offered for resale, resold or otherwise transferred by you without compliance with the registration and prospectus delivery requirements of the Securities Act as long as:

 
 
•
 
you are acquiring the new notes in the ordinary course of your business;
         

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•
 
you are not participating, do not intend to participate and have no arrangement or understanding with any person to participate in a distribution of the new notes;

 
 
•
 
you are not an "affiliate" of ours; and

 
 
•
 
you are not a broker-dealer that acquired any of its old notes directly from us.

 
 
If you fail to satisfy any of the foregoing conditions, you will not be permitted to tender your old notes in the exchange offer and you must comply with the registration and prospectus delivery requirements of the Securities Act in connection with any sale or other transfer of your old notes unless such sale is made pursuant to an exemption from such requirements.

 
 
Each broker or dealer that receives new notes for its own account in exchange for old notes that were acquired as a result of market-making or other trading activities must acknowledge that it will comply with the registration and prospectus delivery requirements of the Securities Act in connection with any offer to resell, resale or other transfer of the new notes issued in the exchange offer, including the delivery of a prospectus that contains information with respect to any selling holder required by the Securities Act in connection with any resale of the new notes.

 
 
See "The Exchange Offer—Resales of New Notes."

Exchange agent
 
The Bank of New York is serving as the exchange agent in connection with the exchange offer. The address and telephone and facsimile numbers of the exchange agent are listed under the heading "The Exchange Offer—Exchange Agent."

Use of proceeds
 
We will not receive any proceeds from the issuance of new notes in the exchange offer. We will pay all expenses incident to the exchange offer. See "Use of Proceeds" and "The Exchange Offer—Fees and Expenses."

The New Notes

        The terms of the new notes are identical in all material respects to those of the old notes, except that the transfer restrictions and registration rights applicable to the old notes do not apply to the new notes. The new notes will evidence the same debt as the old notes and will be governed by the same indenture. Where we refer to "notes" in this prospectus, we are referring to both the old notes and the new notes.

Notes offered   Up to $800,000,000 principal amount of 9.250% Senior Notes due 2015, which have been registered under the Securities Act.

Maturity date
 
February 1, 2015
     

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Interest
 
Interest on the new notes will accrue at the rate per annum set forth on the cover page hereof. Interest on the notes will be payable semi-annually in arrears on February 1 and August 1 of each year, commencing on August 1, 2005, to holders of record on the immediately preceding January 15 and July 15. Interest on the new notes will accrue from the most recent date through which interest has been paid or, if no interest has been paid, from the date of original issuance of the old notes.

Listing
 
We intend to apply for listing of the new notes on the New York Stock Exchange.

Ranking
 
The notes are our general unsecured obligations equal in right of payment to all our existing and future unsubordinated indebtedness.

Optional redemption
 
The notes will be redeemable in whole or in part at our option at a redemption price equal to the greater of (i) 100% of the principal amount of the notes being redeemed or (ii) the sum of the present values of the remaining scheduled payments of principal and interest thereon, excluding accrued and unpaid interest, discounted at a rate as specified below in "Description of New Notes—Optional Redemption," plus, in each case, accrued but unpaid interest to the date of redemption.

Global note; book-entry system
 
The new notes will be issued only in fully registered form without interest coupons and in minimum denominations of $1,000. The new notes will be evidenced by a global note deposited with the trustee for the new notes, as custodian for The Depository Trust Company, or DTC. Beneficial interests in the global notes will be shown on, and transfers of those beneficial interests can only be made through, records maintained by DTC and its participants. See "Description of New Notes—Global Notes."

Certain Federal Income Tax Considerations

        We believe that the exchange of your old notes for new notes to be issued in connection with the exchange offer should not result in any gain or loss to you for United States federal income tax purposes. See "Certain Federal Income Tax Considerations."

Risk Factors

        You should carefully consider the matters set forth under "Risk Factors" before you decide to tender your old notes.

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RISK FACTORS

        Before tendering old notes in the exchange offer, you should carefully review the information contained elsewhere in this prospectus and should particularly consider the following discussion on the risks involved.

Risks Related to Our Business

        Our business is subject to known and unknown risks, uncertainties and other factors—many of which we are unable to predict or control—that may cause our actual results, performance or achievements, or health care industry results, to be materially different from expectations or from those expressed or implied by any forward-looking statements we make in this prospectus or our filings with the SEC.

        Should one or more of the risks and uncertainties described in this prospectus or elsewhere in our filings with the SEC occur or our results of operations continue to deteriorate,

We are subject to a significant number of claims and lawsuits that significantly affect our ongoing business and can have a material adverse effect on our liquidity, financial position or results of operations.

        We and our subsidiaries are subject to a significant number of claims and lawsuits. We are also the subject of federal and state agencies' heightened and coordinated civil and criminal investigations and enforcement efforts, and have received subpoenas and other requests for information relating to a variety of subjects. In the present environment, we expect that these enforcement activities will take on additional importance, that government enforcement activities may intensify, and that additional matters concerning us and our subsidiaries may arise. We also expect new claims and lawsuits to be brought against us from time to time.

        The results of these claims and lawsuits cannot be predicted, and it is possible that the ultimate resolution of these claims and lawsuits, individually or in the aggregate, may have a material adverse effect on our business (both in the near and long term), financial position, results of operations or cash flows. Although we defend ourselves vigorously against claims and lawsuits and cooperate with investigations, these matters:


        We have been and continue to be engaged in general discussions with federal law enforcement agencies regarding the possibility of non-litigated resolution of outstanding issues with the federal government. We are not able to predict whether such a resolution will in fact occur on any terms, project a timeline for resolution or quantify the economic impact of any non-litigated resolution.

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However, if we do reach a non-litigated resolution, it is possible that the resolution could be significant and may require us to incur additional debt or other financing. If a non-litigated resolution does not occur, we will continue to defend ourselves vigorously against claims and lawsuits. Any resolution of significant claims against us, whether as a result of litigation or negotiation, could have a material adverse impact on our business, liquidity, financial position or results of operations.

Our revenues and results of operations are significantly affected by payments received from the government and other third party payers.

        We strive to ensure that we are appropriately compensated for the services we provide, but third-party payers continue to ask us to accept lower rates of payment even in the face of rising medical costs, and we have disputes with many of our third-party payers over payment for past services.

        Payments from government programs are subject to statutory and regulatory changes, administrative rulings, interpretations and determinations, requirements for utilization review, and federal and state funding restrictions, all of which could materially increase or decrease program payments, as well as affect the cost of providing service to patients and the timing of payments to facilities. We are unable to predict the effect of future policy changes on our operations. If the rates paid or the scope of services covered by government payers are reduced, there could be a material adverse effect on our business, financial position, results of operations or cash flows.

        Many states in which we operate are facing budgetary challenges that pose a threat to Medicaid funding levels to hospitals and other providers. We expect these challenges to continue; however, we cannot predict the extent of the impact of the states' budget restrictions on our hospitals. Also, any changes to federal Medicaid funding methodologies or levels to the states could adversely impact Medicaid payments to our hospitals.

Our business continues to be adversely affected by increases in uninsured and underinsured patients.

        We have experienced an adverse change in our business mix and operating results as the level of uninsured and underinsured patients grew at an escalating rate. We believe this trend is due to a combination of broad economic factors, including unemployment levels, reductions in state Medicaid budgets, increasing numbers of individuals and employers who choose not to purchase insurance and an increased burden of co-payments and deductibles to be made by patients instead of insurers. Additionally, many of these patients are being admitted through the emergency department and often require more costly care, resulting in higher billings, which are the least collectible of all accounts.

        Our Compact with Uninsured Patients, or Compact, is designed to offer managed care-style discounts to most uninsured patients, which enables us to offer lower rates to those patients who historically have been charged standard gross charges. A significant portion of those charges had previously been written down in our provision for doubtful accounts. Under the Compact, the discount offered to uninsured patients is recognized as a contractual allowance, which reduces net operating revenues at the time the self-pay accounts are recorded and should reduce our provision for doubtful accounts in the future. The discounts for uninsured patients began to be phased in during the second quarter of 2004 at many of our hospitals and were in effect at 40 of our hospitals by the end of 2004. We are evaluating and addressing legal and other issues that may limit our ability to implement the discounting components of the Compact at our hospitals in Texas.

Our business and financial results could be harmed if we are not able to attract and retain employees, physicians and other health care professionals, and our costs continue to be adversely affected by the shortage of nurses.

        Our operations depend on the efforts, ability and experience of our employees and the physicians and medical staffs of our hospitals, most of whom have no long-term employment relationship with us.

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In some of our markets, physician recruitment and retention are affected by a shortage of physicians in certain specialties. The loss of some or all of our key employees or the inability to attract or retain sufficient numbers of qualified physicians and other health care professionals could have a material adverse effect on our business, financial position, results of operations or cash flows.

        A significant cost pressure facing us and the industry in general is the ongoing increase in labor costs due to a nationwide shortage of nurses and the enactment of state laws regarding nurse-staffing ratios. The nursing shortage is more serious in certain specialties and in certain geographic areas than others, including several areas in which we operate hospitals, and has resulted in increased costs for nursing personnel. State-mandated nurse-staffing ratios adversely affect not only our labor costs, but, if we are unable to hire the necessary number of nurses to meet the required ratios, they may also cause us to limit patient admissions with a corresponding adverse effect on our net operating revenues. The vast majority of hospitals in California, including our hospitals, are not at all times meeting the state-mandated nurse-staffing ratios that went into effect on January 1, 2004.

        We cannot predict the degree to which we will be affected by the future availability or cost of nursing personnel, but we expect to continue to experience significant wage and benefit pressures created by the current nursing shortage throughout the country and escalation in state-mandated nurse-staffing ratios. In November 2004, California delayed its next increase in the mandated ratios until at least 2008, which will abate some of the anticipated cost increases in 2005. Nevertheless, we may be required to enhance wages and benefits to recruit and retain nurses. We may also be required to increase our use of temporary personnel, which is typically more expensive.

Our business and financial results could be harmed by violations of existing regulations or compliance with new or changed regulations.

        Our business is governed by a framework of federal and state laws, rules and regulations that are extremely complex and for which we often have the benefit of little or no regulatory or judicial interpretation. We are subject to extensive federal, state and local regulation relating to licensure, conduct of operations, ownership of facilities, physician relationships, addition of facilities and services, and charges and effective reimbursement rates for services. If a determination is made that we were in material violation of such laws, rules or regulations, our business, financial position, results of operations or cash flows could be materially adversely affected. In addition, regulation is constantly changing and we are unable to predict the future course of federal, state and local regulation, including Medicare and Medicaid statutes and regulations. Further changes in the regulatory framework affecting health care providers could have a material adverse effect on our business, financial position, results of operations or cash flows.

Insurance costs and availability have an adverse effect on our operations.

        Our malpractice expense has increased over the past several years. We continue to experience unfavorable pricing and availability trends in the professional and general liability insurance markets and increases in the size of claim settlements and awards in this area. If these trends continue, they could have an adverse effect on our company. Physicians, including those who practice at some of our hospitals, face significant and sometimes prohibitive increases in malpractice insurance premiums and limitations on availability, which could cause those physicians to limit their practices. That, in turn, could and does result in lower admissions to our hospitals. All reinsurance and any excess professional and general liability insurance we purchase are subject to policy aggregate limitations. If such policy aggregate limitations should be partially or fully exhausted in the future, or actual payments of claims materially exceed projected estimates of claims, our business, financial position, results of operations or cash flows could be materially adversely affected.

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Our operations are affected by the geographic concentration of our hospitals.

        As of December 31, 2004, the largest concentrations of our licensed beds were in California (27.0%), Florida (23.2%) and Texas (15.1%). Such concentrations increase the risk that, should adverse economic, regulatory or other developments occur within these states, our business, financial position, results of operations or cash flows could be adversely affected.

Trends affecting our actual or anticipated results may lead to charges that would adversely affect our results of operations.

        As a result of the various factors that affect our industry generally and our business specifically, we may from time to time record charges to our results of operations. For example, as a result of our recent financial trends and the current outlook for our future operating performance, we recorded goodwill and long-lived asset impairment charges of approximately $1.2 billion during the fourth quarter of 2004. Based on future financial trends and the possible impact of negative trends on our future outlook, further impairments of long-lived assets and goodwill may occur, and we will incur additional restructuring charges. Such charges would adversely affect our results of operations.

Challenges that affect the health care industry and other external factors also have an effect on our operations.

        We are impacted by the challenges currently facing the health care industry as a whole. We believe that the key ongoing industry-wide challenges are as follows:

        In addition, our business and results of operations are also affected by other factors that affect both the industry and us, including:

        In particular, the patient volumes and net operating revenues at our general hospitals and related health care facilities are subject to economic and seasonal variations caused by a number of factors, including, but not limited to:

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Risks Relating to the Notes

We and our subsidiaries have a substantial amount of debt and other liabilities that is effectively senior to the notes.

        As of December 31, 2004, we had approximately $4.4 billion of long-term debt. The notes are effectively subordinated to our one-year letter of credit facility, which we entered into after having terminated our five-year revolving credit agreement on December 31, 2004. Under the new letter of credit facility, Bank of America, N.A., as administrative agent and letter of credit issuing bank, may in its discretion, issue standby letters of credit for our account in an aggregate amount available for drawing (including unpaid reimbursement obligations for drawn letters of credit) up to $250 million. The approximately $216 million in letters of credit that were outstanding on December 31, 2004 under the five-year revolving credit agreement when it was terminated continued to be outstanding under the new letter of credit facility. On March 16, 2005, we amended the new letter of credit facility. Prior to its amendment, the letter of credit facility was collateralized by the stock of certain of our subsidiaries and by cash equal to 105% of the facility. Under the amended letter of credit facility, the lenders have agreed to release their liens on the stock of our subsidiaries, at our request any time after April 15, 2005, so long as no default exists. At the time of such release, the termination date of the letter of credit facility will be extended from December 31, 2005 to June 30, 2006. The facility will remain collateralized by cash as described above. You should not rely on the limitations in the facility on the ability of our subsidiaries to incur debt.

        From time to time, we expect to engage in various capital markets, bank credit and other financing activities depending on our needs and financing alternatives available at that time. In addition, the notes are effectively subordinated to debt and other liabilities of our subsidiaries, which in the aggregate were approximately $65 million at December 31, 2004. Our operations are and will be conducted through our subsidiaries and substantially all of our assets are and will be owned by our subsidiaries. Our ability to make required principal and interest payments on our indebtedness, including the notes, depends on the earnings of our subsidiaries and on our ability to receive dividends or other payments from such subsidiaries. Any right we have to the assets of each of our subsidiaries upon the liquidation, reorganization or insolvency of such subsidiaries (and consequently your right as a holder of notes to participate in those assets) will be effectively subordinated to the claims of the creditors (including trade creditors) and preferred stockholders, if any, of such subsidiaries, except to the extent we have a claim against such subsidiaries as a creditor. If any claims we may have as a creditor of a subsidiary are recognized, such claims would be subject to any security interest in the assets of such subsidiary and subordinate to any indebtedness of such subsidiary senior to that held by us.

The protections provided in the notes are limited and we may take actions that could adversely affect the notes.

        Our outstanding notes, including the new notes and the old notes, are not rated investment grade by either Standard & Poor's or Moody's Investors Services. However, the covenants applicable to the notes are identical to those applicable to our other outstanding notes, some of which were rated investment grade at the time they were issued. The covenants do not limit the amount of debt we may incur and only provide limited restrictions on the security we may provide for future debt. We may

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decide to incur additional secured or unsecured debt in the future to finance any judgments or settlements or for other business purposes, and any such additional debt may have an adverse effect on our credit rating and the priority of claims of holders of the notes. That additional debt, if incurred, could be held by a number of creditors, including affiliates of the initial purchasers of the old notes.

Risks Related to the Exchange Offer

You may have difficulty selling the old notes you do not exchange.

        If you do not exchange your old notes for new notes in the exchange offer, you will continue to be subject to the restrictions on transfer of your old notes as described in the legend on the global notes representing the old notes. There are restrictions on transfer of your old notes because we issued the old notes under an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act and applicable state securities laws. In general, you may only offer or sell the old notes if they are registered under the Securities Act and applicable state securities laws or offered and sold under an exemption from, or in a transaction not subject to, these requirements. We do not intend to register any old notes not tendered in the exchange offer and, upon consummation of the exchange offer, you will not be entitled to any rights to have your untendered old notes registered under the Securities Act. In addition, the trading market, if any, for the remaining old notes will be adversely affected depending on the extent to which old notes are tendered and accepted in the exchange offer.

You may have difficulty selling the new notes because there is no existing trading market for them.

        The new notes are being offered to the holders of the old notes, which were issued on January 28, 2005 primarily to a small number of institutional investors. There is no existing trading market for the new notes. Although the initial purchasers in the offering of the old notes have informed us that they intend to make a market in the new notes, they are not obligated to do so and any market-making activity may be discontinued at any time without notice. As a result, the market price of the new notes could be adversely affected.

        We intend to apply for listing of the new notes on the New York Stock Exchange. The liquidity of any market for the new notes will depend upon the number of holders of the new notes, our financial performance, the market for similar securities, the interest of securities dealers in making a market in the new notes and other factors relating to us. A liquid trading market may not develop for the new notes.

Broker-dealers may need to comply with the registration and prospectus delivery requirements of the Securities Act.

        Any broker-dealer that (1) exchanges its old notes in the exchange offer for the purpose of participating in a distribution of the new notes or (2) resells new notes that were received by it for its own account in the exchange offer may be deemed to have received restricted securities and will be required to comply with the registration and prospectus delivery requirements of the Securities Act in connection with any resale transaction by that broker-dealer. Any profit on the resale of the new notes and any commission or concessions received by a broker-dealer may be deemed to be underwriting compensation under the Securities Act.

You may not receive new notes in the exchange offer if the exchange offer procedure is not followed.

        We will issue the new notes in exchange for your old notes only if you tender the old notes and deliver a properly completed and duly executed letter of transmittal and other required documents before expiration of the exchange offer. You should allow sufficient time to ensure timely delivery of the necessary documents. Neither the exchange agent nor we are under any duty to give notification of defects or irregularities with respect to the tenders of old notes for exchange. If you are the beneficial

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holder of old notes that are registered in the name of your broker, dealer, commercial bank, trust company or other nominee, and you wish to tender in the exchange offer, you should promptly contact the person in whose name your old notes are registered and instruct that person to tender on your behalf.

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USE OF PROCEEDS

        We will not receive proceeds from the issuance of the new notes offered hereby. In consideration for issuing the new notes in exchange for old notes as described in this prospectus, we will receive old notes of like principal amount. The old notes surrendered in exchange for the new notes will be retired and canceled.


SELECTED FINANCIAL INFORMATION

        In March 2003, our board of directors approved a change in our fiscal year from a fiscal year ending on May 31 to a fiscal year that coincides with the calendar year, effective December 31, 2002. Selected financial information for the years ended December 31, 2004 and 2003, the seven-month transition period ended December 31, 2002 and the fiscal years ended May 31, 2002 through 2000 is set forth below. The information was taken from our consolidated financial statements, which have been audited by KPMG LLP, our independent registered public accounting firm, and from our underlying accounting records.

        You also should read "Management's Discussion and Analysis of Financial Condition and Results of Operations," our consolidated financial statements and related notes and the report of our independent registered public accounting firm included in our Annual Report on Form 10-K for the year ended December 31, 2004, incorporated in this prospectus by reference. See "Incorporation by Reference."

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        The selected financial data presented below are not necessarily indicative of our future financial position or results of operations. Reasons for this include, but are not limited to (1) our voluntary adoption of a new method for calculating Medicare outlier payments effective January 1, 2003, and subsequent new regulations governing the calculation of such payments, (2) future changes in Medicare regulations, (3) the timing and magnitude of negotiations and resolutions of disputes with managed care companies, (4) fluctuations in revenue allowances and discounts, including the impact of phasing in the discounting components of our Compact with Uninsured Patients, (5) the increase in the number of patients who are uninsured, (6) our ability to collect our accounts receivable, particularly in light of recent trends in patient accounts receivable collectibility and associated increases in provisions for doubtful accounts, (7) levels of malpractice expense and settlement trends, (8) the ultimate resolution of investigations and lawsuits and (9) changes in interest rates, tax rates, occupancy levels and patient volumes. Other items include the effects of impairment and restructuring charges, losses from early extinguishment of debt, and other disposals of facilities and other assets, all of which have also occurred during some or all of the periods presented in the below tables.

 
   Years Ended December 31
    
    
    
    
  
 
   Seven Months
Ended
December 31,
2002
   Years Ended May 31
  
 
   2004
   2003
   2002
   2001
   2000
  
 
   (In Millions, Except Per-Share Amounts)

  
Net operating revenues   $ 9,919   $ 10,146   $ 6,069   $ 9,734   $ 8,419   $ 8,054  
Operating expenses:                                      
  Salaries and benefits     4,325     4,239     2,341     3,837     3,332     3,242  
  Supplies     1,724     1,602     870     1,371     1,174     1,149  
  Provision for doubtful accounts     1,205     1,135     478     710     596     619  
  Other operating expenses     2,231     2,108     1,211     1,909     1,756     1,748  
  Depreciation     368     360     206     347     319     316  
  Goodwill amortization     —     —     —     85     83     79  
  Other amortization     20     20     13     23     20     22  
  Impairment of long-lived assets and goodwill     1,236     1,278     9     76     55     216  
  Restructuring charges     36     106     13     23     88     95  
  Costs of litigation and investigations     74     282     —     —     —     —  
  Loss from early extinguishment of debt     13     —     4     383     56     —  
   
 
 
 
 
 
 
Operating income (loss)     (1,313 )   (984 )   924     970     940     568  
   
 
 
 
 
 
 
Interest expense     (333 )   (294 )   (144 )   (324 )   (452 )   (477 )
Investment earnings     20     16     13     31     35     22  
Minority interests     3     (21 )   (10 )   (24 )   (6 )   (14 )
Net gains on sales of facilities, long-term investments and subsidiary common stock     10     16     —     —     28     49  
Impairment of investment securities     —     (5 )   (64 )   —     —     —  
   
 
 
 
 
 
 
Income (loss) before income taxes     (1,613 )   (1,272 )   719     653     545     148  
   
 
 
 
 
 
 
Income tax (expense) benefit     (184 )   228     (289 )   (319 )   (238 )   (101 )
Income (loss) from continuing operations, before discontinued operations and cumulative effect of accounting change   $ (1,797 ) $ (1,044 ) $ 430   $ 334   $ 307   $ 47  
   
 
 
 
 
 
 
Basic earnings (loss) per common share from continuing operations   $ (3.85 ) $ (2.24 ) $ 0.89   $ 0.68   $ 0.64   $ 0.10  
   
 
 
 
 
 
 
Diluted earnings (loss) per common share from continuing operations   $ (3.85 ) $ (2.24 ) $ 0.87   $ 0.66   $ 0.63   $ 0.10  
   
 
 
 
 
 
 

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        All periods have been adjusted to reflect a 3-for-2 stock split declared in May 2002 and distributed on June 28, 2002.

 
   Years Ended
December 31
   Seven
Months
Ended
December 31,
2002
    
    
    
  
 
   Years Ended May 31
  
 
   2004
   2003
   2002
   2001
   2000
  
 
   (Dollars in Millions)

  
Cash Flow Data                                      
Net cash provided by (used in) operating activities   $ (82 ) $ 838   $ 1,126   $ 2,315   $ 1,818   $ 869  
Net cash used in investing activities     (12 )   (333 )   (389 )   (1,227 )   (574 )   (36 )
Net cash provided by (used in) financing activities     129     (96 )   (565 )   (1,112 )   (1,317 )   (727 )

Other Financial Data
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Ratio of earnings to fixed charges(1)(2)     —     —     5.1     2.7     2.1     1.2  
(1)
The ratio of earnings to fixed charges is calculated by dividing income (loss) from continuing operations before income taxes excluding equity earnings and minority interests, plus fixed charges by fixed charges. Fixed charges consist of interest expense, including amortization of deferred financing costs, and that portion of rental expense deemed to be representative of the interest component of rental expense.

(2)
Earnings (loss), as adjusted, were insufficient to cover fixed charges for the years ended December 31, 2004 and 2003 by $1,629 million and $1,268 million, respectively, to provide a one-to-one ratio.

 
   December 31
   May 31
 
   2004
   2003
   2002
   2002
   2001
   2000
 
   (In Millions)
Balance Sheet Data                                    
Working capital (current assets minus current liabilities)   $ 1,862   $ 1,854   $ 1,385   $ 829   $ 1,060   $ 1,682
Total assets     10,078     12,298     13,796     13,803     12,995     13,161
Long-term debt, net of current portion     4,395     4,039     3,872     3,919     4,202     5,668
Shareholders' equity     1,732     4,361     5,824     5,697     5,153     4,142

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THE EXCHANGE OFFER

Purpose and Effect of the Exchange Offer

        In connection with the sale of the old notes, we entered into an exchange and registration rights agreement with the initial purchasers of the old notes, pursuant to which we agreed to file and to use our commercially reasonable efforts to cause to be declared effective by the SEC a registration statement with respect to the exchange of the old notes for the new notes. We are making the exchange offer to fulfill our contractual obligations under that agreement. A copy of the exchange and registration rights agreement has been filed as an exhibit to the registration statement of which this prospectus is a part.

        Pursuant to the exchange offer, we will issue the new notes in exchange for old notes. The terms of the new notes are identical in all material respects to those of the old notes, except that the new notes (1) have been registered under the Securities Act and therefore will not be subject to certain restrictions on transfer applicable to the old notes and (2) will not have registration rights or provide for any increase in the interest rate related to the obligation to register. See "Description of New Notes" and "Description of Old Notes" for more information on the terms of the respective notes and the differences between them.

        We are not making the exchange offer to, and will not accept tenders for exchange from, holders of old notes in any jurisdiction in which an exchange offer or the acceptance thereof would not be in compliance with the securities or blue sky laws of such jurisdiction. Unless the context requires otherwise, the term "holder" means any person in whose name the old notes are registered on our books or any other person who has obtained a properly completed bond power from the registered holder, or any person whose old notes are held of record by DTC who desires to deliver such old notes by book-entry transfer at DTC.

        We make no recommendation to the holders of old notes as to whether to tender or refrain from tendering all or any portion of their old notes pursuant to the exchange offer. In addition, no one has been authorized to make any such recommendation. Holders of old notes must make their own decision whether to tender pursuant to the exchange offer and, if so, the aggregate amount of old notes to tender after reading this prospectus and the letter of transmittal and consulting with their advisers, if any, based on their own financial position and requirements.

Terms of the Exchange

        Upon the terms and conditions described in this prospectus and in the accompanying letter of transmittal, which together constitute the exchange offer, we will accept for exchange old notes which are properly tendered at or before the expiration time and not withdrawn as permitted below. As of the date of this prospectus, $800,000,000 principal amount of 9.250% Senior Notes due 2015 are outstanding. This prospectus, together with the letter of transmittal, is first being sent on or about the date on the cover page of the prospectus to all holders of old notes known to us. Old notes tendered in the exchange offer must be in denominations of principal amount of $1,000 and any integral multiple of $1,000.

        Our acceptance of the tender of old notes by a tendering holder will form a binding agreement between the tendering holder and us upon the terms and subject to the conditions provided in this prospectus and in the accompanying letter of transmittal.

Expiration, Extension and Amendment

        The expiration time of the exchange offer is 5:00 P.M., Eastern time, on                        , 2005. However, we may, in our sole discretion, extend the period of time for which the exchange offer is open and set a later expiration date. The term "expiration time" as used herein means the latest time

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and date to which we extend the exchange offer. If we decide to extend the exchange offer period, we will then delay acceptance of any old notes by giving oral or written notice of an extension to the holders of old notes as described below. During any extension period, all old notes previously tendered will remain subject to the exchange offer and may be accepted for exchange by us. Any old notes not accepted for exchange will be returned to the tendering holder after the expiration or termination of the exchange offer.

        Our obligation to accept old notes for exchange in the exchange offer is subject to the conditions described below under "—Conditions to the Exchange Offer." We may decide to waive any of the conditions in our discretion. Furthermore, we reserve the right to amend or terminate the exchange offer, and not to accept for exchange any old notes not previously accepted for exchange, upon the occurrence of any of the conditions of the exchange offer specified below under the same heading. We will give oral or written notice of any extension, amendment, non-acceptance or termination to the holders of the old notes as promptly as practicable. If we materially change the terms of the exchange offer, we will resolicit tenders of the old notes, file a post-effective amendment to the prospectus and provide notice to you. If the change is made less than five business days before the expiration of the exchange offer, we will extend the offer so that the holders have at least five business days to tender or withdraw. We will notify you of any extension by means of a press release or other public announcement no later than 9:00 A.M., Eastern time, on the first business day after the previously scheduled expiration time.

Procedures for Tendering

Valid Tender

        Except as described below, a tendering holder must, prior to the expiration time, transmit to The Bank of New York, the exchange agent, at the address listed under the heading "—Exchange Agent":

        In addition, a tendering holder must:

        The term "agent's message" means a message, transmitted by DTC to and received by the exchange agent and forming a part of a book-entry confirmation, that states that DTC has received an express acknowledgment that the tendering holder agrees to be bound by the letter of transmittal and that we may enforce the letter of transmittal against this holder.

        If the letter of transmittal is signed by a person other than the registered holder of old notes, the letter of transmittal must be accompanied by a written instrument of transfer or exchange in satisfactory form duly executed by the registered holder with the signature guaranteed by an eligible institution. The old notes must be endorsed or accompanied by appropriate powers of attorney. In either case, the old notes must be signed exactly as the name of any registered holder appears on the old notes.

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        If the letter of transmittal or any old notes or powers of attorney are signed by trustees, executors, administrators, guardians, attorneys-in-fact, officers of corporations or others acting in a fiduciary or representative capacity, these persons should so indicate when signing. Unless waived by us, proper evidence satisfactory to us of their authority to so act must be submitted.

        By tendering, each holder will represent to us that, among other things, the new notes are being acquired in the ordinary course of business of the person receiving the new notes, whether or not that person is the holder, and neither the holder nor the other person has any arrangement or understanding with any person to participate in the distribution of the new notes. In the case of a holder that is not a broker-dealer, that holder, by tendering, will also represent to us that the holder is not engaged in and does not intend to engage in a distribution of the new notes.

        The method of delivery of old notes, letters of transmittal and all other required documents is at your election and risk. If the delivery is by mail, we recommend that you use registered mail, properly insured, with return receipt requested. In all cases, you should allow sufficient time to assure timely delivery. You should not send letters of transmittal or old notes to us.

        If you are a beneficial owner whose old notes are registered in the name of a broker, dealer, commercial bank, trust company or other nominee, and wish to tender, you should promptly instruct the registered holder to tender on your behalf. Any registered holder that is a participant in DTC's book-entry transfer facility system may make book-entry delivery of the old notes by causing DTC to transfer the old notes into the exchange agent's account.

Signature Guarantees

        Signatures on a letter of transmittal or a notice of withdrawal must be guaranteed, unless the old notes surrendered for exchange are tendered:

        If signatures on a letter of transmittal or a notice of withdrawal are required to be guaranteed, the guarantees must be by an "eligible institution." An "eligible institution" is an "eligible guarantor institution" meeting the requirements of the registrar for the notes, which requirements include membership or participation in the Security Transfer Agent Medallion Program, or STAMP, or such other "signature guarantee program" as may be determined by the registrar for the notes in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended.

Book-Entry Transfer

        The exchange agent will make a request to establish an account for the old notes at DTC for purposes of the exchange offer within two business days after the date of this prospectus. Any financial institution that is a participant in DTC's systems must make book-entry delivery of old notes by causing DTC to transfer those old notes into the exchange agent's account at DTC in accordance with DTC's procedure for transfer. The participant should transmit its acceptance to DTC at or prior to the expiration time or comply with the guaranteed delivery procedures described below. DTC will verify this acceptance, execute a book-entry transfer of the tendered old notes into the exchange agent's account at DTC and then send to the exchange agent confirmation of this book-entry transfer. The confirmation of this book-entry transfer will include an agent's message confirming that DTC has received an express acknowledgment from this participant that this participant has received and agrees to be bound by the letter of transmittal and that we may enforce the letter of transmittal against this participant.

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        Delivery of new notes issued in the exchange offer may be effected through book-entry transfer at DTC. However, the letter of transmittal or facsimile of it or an agent's message, with any required signature guarantees and any other required documents, must:

        Delivery of documents to DTC in accordance with DTC's procedures does not constitute delivery to the exchange agent.

Guaranteed Delivery

        If a registered holder of old notes desires to tender the old notes, and the old notes are not immediately available, or time will not permit the holder's old notes or other required documents to reach the exchange agent before the expiration time, or the procedure for book-entry transfer described above cannot be completed on a timely basis, a tender may nonetheless be made if:


Determination of Validity

        We will determine in our sole discretion all questions as to the validity, form and eligibility of old notes tendered for exchange. This discretion extends to the determination of all questions concerning the timing of receipts and acceptance of tenders. These determinations will be final and binding. We reserve the right to reject any particular old note not properly tendered or of which our acceptance might, in our judgment or our counsel's judgment, be unlawful. We also reserve the right to waive any defects or irregularities or conditions of the exchange offer as to any particular old note either before or after the expiration time, including the right to waive the ineligibility of any tendering holder. Our interpretation of the terms and conditions of the exchange offer as to any particular old note either before or after the expiration time, including the letter of transmittal and the instructions to the letter of transmittal, shall be final and binding on all parties. Unless waived, any defects or irregularities in connection with tenders of old notes must be cured within a reasonable period of time.

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        Neither we, the exchange agent nor any other person will be under any duty to give notification of any defect or irregularity in any tender of old notes. Moreover, neither we, the exchange agent nor any other person will incur any liability for failing to give notification of any defect or irregularity.

Acceptance of Old Notes for Exchange; Issuance of New Notes

        Upon the terms and subject to the conditions of the exchange offer, we will accept, promptly after the expiration time, all old notes properly tendered. We will issue the new notes promptly after acceptance of the old notes. For purposes of the exchange offer, we will be deemed to have accepted properly tendered old notes for exchange when, as and if we have given oral or written notice to the exchange agent, with prompt written confirmation of any oral notice.

        In all cases, issuance of new notes for old notes will be made only after timely receipt by the exchange agent of:

        Unaccepted or non-exchanged old notes will be returned without expense to the tendering holder of the old notes. In the case of old notes tendered by book-entry transfer in accordance with the book-entry procedures described above, the non-exchanged old notes will be credited to an account maintained with DTC as promptly as practicable after the expiration or termination of the exchange offer. For each old note accepted for exchange, the holder of the old note will receive a new note having a principal amount equal to that of the surrendered old note.

Interest Payments on the New Notes

        The new notes will bear interest from the most recent date through which interest has been paid on the old notes for which they were exchanged. Accordingly, registered holders of new notes on the relevant record date for the first interest payment date following the completion of the exchange offer will receive interest accruing from the most recent date through which interest has been paid. Old notes accepted for exchange will cease to accrue interest from and after the date of completion of the exchange offer. Holders of old notes whose old notes are accepted for exchange will not receive any payment for accrued interest on the old notes otherwise payable on any interest payment date the record date for which occurs on or after completion of the exchange offer and will be deemed to have waived their rights to receive the accrued interest on the old notes.

Withdrawal Rights

        Tenders of old notes may be withdrawn at any time before the expiration time.

        For a withdrawal to be effective, the exchange agent must receive a written notice of withdrawal at the address or, in the case of eligible institutions, at the facsimile number, indicated under "—Exchange Agent" before the expiration time. Any notice of withdrawal must:

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        If certificates for old notes have been delivered or otherwise identified to the exchange agent, then, prior to the release of these certificates the withdrawing holder must also submit the serial numbers of the particular certificates to be withdrawn and signed notice of withdrawal with signatures guaranteed by an eligible institution, unless this holder is an eligible institution. If old notes have been tendered in accordance with the procedure for book-entry transfer described above, any notice of withdrawal must specify the name and number of the account at the book-entry transfer facility to be credited with the withdrawn old notes.

        Any old notes properly withdrawn will be deemed not to have been validly tendered for exchange. New notes will not be issued in exchange unless the old notes so withdrawn are validly re-tendered. Properly withdrawn old notes may be re-tendered by following the procedures described under "—Procedures for Tendering" above at any time at or before the expiration time.

        We will determine all questions as to the validity, form and eligibility, including time of receipt, of notices of withdrawal.

Conditions to the Exchange Offer

        Notwithstanding any other provisions of the exchange offer, or any extension of the exchange offer, we will not be required to accept for exchange, or to exchange, any old notes for any new notes, and, as described below, may terminate the exchange offer, whether or not any old notes have been accepted for exchange, or may waive any conditions to or amend the exchange offer, if any of the following conditions has occurred or exists:

20

        If we determine in our sole discretion that any of the foregoing events or conditions has occurred or exists, we may, subject to applicable law, terminate the exchange offer, whether or not any old notes have been accepted for exchange, or may waive any such condition or otherwise amend the terms of the exchange offer in any respect. See "—Expiration, Extension and Amendment" above.

Resales of New Notes

        Based on interpretations by the staff of the SEC, as described in no-action letters issued to third parties, we believe that new notes issued in the exchange offer in exchange for old notes may be offered for resale, resold or otherwise transferred by holders of the old notes without compliance with the registration and prospectus delivery provisions of the Securities Act, if:

        However, the SEC has not considered the exchange offer described in this prospectus in the context of a no-action letter. We cannot assure you that the staff of the SEC would make a similar determination with respect to the exchange offer as in the other circumstances. Each holder who wishes to exchange old notes for new notes will be required to represent that it meets the above three requirements.

        Any holder who is an affiliate of ours or who intends to participate in the exchange offer for the purpose of distributing new notes or any broker-dealer who purchased old notes directly from us to resell pursuant to Rule 144A or any other available exemption under the Securities Act:


        Each broker-dealer that receives new notes for its own account in exchange for old notes must acknowledge that the old notes were acquired by it as a result of market-making activities or other trading activities and agree that it will deliver a prospectus that meets the requirements of the Securities Act in connection with any resale of the new notes. The letter of transmittal states that by so

21

acknowledging and by delivering a prospectus, a broker-dealer will not be deemed to admit that it is an "underwriter" within the meaning of the Securities Act. See "Plan of Distribution."

        In addition, to comply with state securities laws, the new notes may not be offered or sold in any state unless they have been registered or qualified for sale in such state or an exemption from registration or qualification, with which there has been compliance, is available. The offer and sale of the new notes to "qualified institutional buyers," as defined under Rule 144A of the Securities Act, is generally exempt from registration or qualification under the state securities laws. We currently do not intend to register or qualify the sale of new notes in any state where an exemption from registration or qualification is required and not available.

Exchange Agent

        The Bank of New York has been appointed as the exchange agent for the exchange offer. All executed letters of transmittal and any other required documents should be directed to the exchange agent at the address or facsimile number set forth below. Questions and requests for assistance, requests for additional copies of this prospectus or of the letter of transmittal and requests for notices of guaranteed delivery should be directed to the exchange agent addressed as follows:

THE BANK OF NEW YORK
AS EXCHANGE AGENT

By Facsimile for Eligible Institutions:
(212) 298-1915
Attention: David Mauer
  
 Confirm by Telephone:
(212) 815-2548		   By Mail/Overnight Courier/Hand:
The Bank of New York
Reorganization Unit
101 Barclay Street, 7E
New York, New York 10286
Attention: David Mauer

        Delivery of the letter of transmittal to an address other than as set forth above or transmission of such letter of transmittal via facsimile other than as set forth above does not constitute a valid delivery of the letter of transmittal.

Fees and Expenses

        We have agreed to pay the exchange agent reasonable and customary fees for its services and will reimburse it for its reasonable out-of-pocket expenses in connection with the exchange offer. We will also pay brokerage houses and other custodians, nominees and fiduciaries the reasonable out-of-pocket expenses incurred by them in forwarding copies of this prospectus and related documents to the beneficial owners of old notes, and in handling or tendering for their customers. We will not make any payment to brokers, dealers or others soliciting acceptances of the exchange offer.

        Holders who tender their old notes for exchange will not be obligated to pay any transfer taxes on the exchange. If, however, new notes are to be delivered to, or are to be issued in the name of, any person other than the registered holder of the old notes tendered, or if a transfer tax is imposed for any reason other than the exchange of old notes in connection with the exchange offer, then the amount of any such transfer taxes (whether imposed on the registered holder or any other persons) will be payable by the tendering holder. If satisfactory evidence of payment of such taxes or exemption therefrom is not submitted with the letter of transmittal, the amount of such transfer taxes will be billed directly to such tendering holder.

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Accounting Treatment

        We will record the new notes at the same carrying value as the old notes, as reflected in our accounting records on the date of the exchange. Accordingly, we will not recognize any gain or loss for accounting purposes. The expenses of the exchange offer will be amortized over the term of the new notes.


DESCRIPTION OF NEW NOTES

General

        We issued the old notes and will issue the new notes pursuant to an indenture, dated as of November 6, 2001, as supplemented by the Eighth Supplemental Indenture, dated as of January 28, 2005, between us and The Bank of New York, as trustee (collectively, the "indenture"). The terms of the notes include those stated in the indenture and those made part of the indenture by reference to the Trust Indenture Act of 1939, as amended. The notes are subject to all such terms, and you should refer to the indenture and the Trust Indenture Act for a statement thereof. The following summary of the material provisions of the indenture is not complete and is qualified in its entirety by reference to the indenture, including the definitions therein of terms used below. Upon request, you may obtain a copy of the indenture from us. As used in this "Description of New Notes," the terms "we," "our" and "us" refer to Tenet Healthcare Corporation and not to any of our subsidiaries.

        The indenture does not limit the aggregate principal amount of debt securities that may be issued thereunder. We are permitted under the terms of the indenture to, and may in the future, issue other debt securities under the indenture constituting one or more separate series. The new notes will be our general unsecured obligations, equal in right of payment with all our existing and future unsubordinated indebtedness.

        Subject to the limitations set forth in the indenture, we may, without the consent of the note holders, issue additional notes under the indenture having the same terms in all respects as the notes or similar in all respects to the notes except for payment of interest (1) scheduled and paid prior to the date of issuance of those additional notes or (2) payable on the first interest payment date following the date of their issuance.

        The new notes will be issued in fully registered form, in denominations of $1,000 and integral multiples thereof, registered in the name of Cede & Co., a nominee of The Depository Trust Company, or DTC. See "—Global Notes" below. The paying agent, registrar and transfer agent for the notes will be the corporate trust department of the trustee in New York, New York. Payment of principal will be made at maturity in immediately payable funds against surrender to the trustee.

Principal, Maturity and Interest

        The old notes were originally offered in, and the new notes will be limited to, the aggregate principal amount of $800,000,000. The old notes and the new notes constitute a single series under the indenture. We may from time to time, without giving notice to or seeking the consent of the holders of the notes, issue notes having the same ranking and the same interest rate, maturity and other terms as the notes. Any additional notes having such similar terms, together with the old notes and the new notes offered hereby, will constitute a single series of notes under the indenture.

        The new notes will mature on February 1, 2015. Interest on the new notes will accrue at the rate per annum set forth on the cover page hereof and will be payable semi-annually in arrears on February 1 and August 1 of each year, commencing on August 1, 2005, to holders of record on the immediately preceding January 15 and July 15. Interest on the new notes will accrue from the most recent date through which interest has been paid on the new notes or the old notes for which the new notes were exchanged or, if no interest has been paid, from the date of original issuance of the old notes.

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        Interest on the new notes will be computed on the basis of a 360-day year comprised of twelve 30-day months. Principal, premium, if any, and interest on the new notes will be payable at our office or agency maintained for such purpose within the City and State of New York or, at our option, payment of interest may be made by check mailed to the holders of the notes at their respective addresses set forth in the register of holders of notes; provided that all payments with respect to notes as to which the holders have given wire transfer instructions to the paying agent on or prior to the relevant record date will be required to be made by wire transfer of immediately available funds to the accounts specified by such holders. Until otherwise designated by us, our office or agency in New York will be the office of the trustee maintained for such purpose.

Optional Redemption

        The notes will be redeemable, in whole or in part, at any time, at our option, at a redemption price equal to the greater of:

plus, in either of the above cases, accrued and unpaid interest thereon to, but not including, the redemption date. The notes will not be subject to any mandatory sinking fund.

        "Adjusted Treasury Rate" means, with respect to any redemption date:

The Adjusted Treasury Rate shall be calculated on the third business day preceding the redemption date.

        "Comparable Treasury Issue" means the United States Treasury security selected by an Independent Investment Banker as having a maturity comparable to the remaining term of the notes to be redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of those notes ("Remaining Life").

        "Comparable Treasury Price" means, with respect to any redemption date, (1) the average of five Reference Treasury Dealer Quotations for such redemption date, after excluding the highest and lowest Reference Treasury Dealer Quotations, or (2) if the Independent Investment Banker obtains fewer than five such Reference Treasury Dealer Quotations, the average of all such quotations.

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        "Independent Investment Banker" means the Reference Treasury Dealers appointed by us.

        "Reference Treasury Dealer" means:

        "Reference Treasury Dealer Quotation" means, with respect to each Reference Treasury Dealer and any redemption date, the average, as determined by the Independent Investment Banker, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Independent Investment Banker by such Reference Treasury Dealer at 5:00 P.M., Eastern time, on the third business day preceding such redemption date.

        If less than all of the notes is to be redeemed at any time, selection of notes for redemption will be made by the trustee in compliance with the requirements of the principal national securities exchange, if any, on which the notes to be redeemed are then listed, or, if the notes are not so listed, on a pro rata basis, by lot or by such method as the trustee deems fair and appropriate; provided that notes with a principal amount of $1,000 will not be redeemed in part.

        We will mail a notice of redemption at least 30 but not more than 60 days before the redemption date to each holder of the notes to be redeemed. If any notes are to be redeemed in part only, the notice of redemption that relates to such notes will state the portion of the principal amount thereof to be redeemed. A new note in principal amount equal to the unredeemed portion thereof will be issued in the name of the holder thereof upon cancellation of the original note.

        Unless we default in payment of the redemption price, on and after the redemption date, interest will cease to accrue on the notes or portions thereof called for redemption.

Limitations on Us and Our Subsidiaries

Limitations on Liens

        The indenture provides that, except as described under "—Exception to Limitations" below, neither we nor any of our subsidiaries will issue, incur, create, assume or guarantee any debt secured by liens, mortgages, pledges, charges, security interests or other encumbrances upon any principal property (which means each of our hospitals that has a book value in excess of 5% of our consolidated net tangible assets), unless the notes will be secured equally and ratably with, or prior to, such debt. This restriction will not apply to:

25


Limitations on Sale and Lease-Back Transactions

        The indenture provides that, except as described under "—Exception to Limitations" below, neither we nor any of our subsidiaries will enter into any sale and lease-back transaction with respect to any principal property with another person, other than us or one of our consolidated subsidiaries, unless:

Exception to Limitations

        Notwithstanding the two covenants described above, we and any of our subsidiaries may issue, incur, create, assume or guarantee debt secured by liens or enter into any sale and lease-back transaction that would otherwise be subject to the restrictions on liens and sale and lease-back transactions described above, provided that (i) the aggregate amount of all our debt subject to the restriction on liens described above plus (ii) the aggregate attributable debt in respect of sale and lease-back transactions that is subject to the restriction on sale and lease-back transactions above, does not exceed 15% of our consolidated net tangible assets.

Consolidation, Merger and Sale of Assets

        The indenture provides that we may not consolidate with, or sell, convey or lease all or substantially all of our properties and assets to, or merge with or into, any other person, unless:

Events of Default

        Under the indenture, each of the following constitutes an event of default with respect to the notes:

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        In addition to the events of default set forth above, an event of default will be deemed to have occurred with respect to the notes in the event of a failure to pay at maturity or the acceleration of our indebtedness having an aggregate principal amount in excess of the greater of $25 million or 5% of our consolidated net tangible assets under the terms of the instrument under which that indebtedness is issued or secured if that indebtedness is not discharged or the acceleration is not annulled within 10 days after written notice.

        If any event of default with respect to the notes occurs and is continuing, either the trustee or the holders of at least 25% in principal amount of the notes then outstanding, by written notice to us and to the trustee, may declare the principal amount of the notes to be due and payable immediately. Notwithstanding the foregoing, in the case of an event of default arising from certain events of bankruptcy, insolvency or reorganization, all outstanding notes will automatically and without any action by the trustee or any holder, become immediately due and payable. After any such acceleration, but before a judgment or decree based on such acceleration, the holders of a majority in aggregate principal amount of the notes then outstanding may, under certain circumstances, rescind and annul such acceleration if all events of default, other than the non-payment of accelerated principal of or interest on the notes, have been cured or waived as provided in the indenture.

        Subject to the provisions of the indenture relating to the duties of the trustee in case an event of default occurs and is continuing, the trustee will be under no obligation to exercise any of its rights or powers under the indenture at the request or direction of any of the holders, unless such holders have offered to the trustee reasonable indemnity. Subject to such provisions for the indemnification of the trustee, the holders of a majority in aggregate principal amount of notes then outstanding will have the right to direct the time, method and place of conducting any proceedings for any remedy available to the trustee or exercising any trust or power conferred on the trustee with respect to the notes.

        No holder of a note will have any right to institute any proceeding with respect to the indenture, or for the appointment of a receiver or a trustee, or for any other remedy thereunder, unless:

        Such limitations, however, do not apply to a suit instituted by a holder of a note for the enforcement of payment of the principal of or interest on such note on or after its due date.

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Defeasance and Covenant Defeasance

        We may elect, at our option at any time, to have the provisions of the indenture relating to defeasance and discharge of indebtedness and to defeasance of certain restrictive covenants applied to the notes.

        Defeasance and Discharge.    The indenture provides that, upon the exercise of our option, we will be discharged from all our obligations with respect to notes (except for certain obligations to exchange or register the transfer of notes, to replace stolen, lost or mutilated notes, to maintain paying agencies and to hold moneys for payment in trust), subject to the conditions precedent below.

        Defeasance of Certain Covenants.    The indenture provides that, upon the exercise of our option with respect to any notes, we may omit to comply with certain restrictive covenants, including those described under "—Limitations on Us and Our Subsidiaries" above, and the occurrence of certain events of default will be deemed not to be or result in an event of default, in each case with respect to such notes, subject to the conditions precedent below.

        In each case, the defeasance provision will be subject to our depositing in trust for the benefit of the holders of the notes money or U.S. government obligations, or both, which, through the payment of principal and interest in respect thereof in accordance with their terms, will provide money in an amount sufficient to pay the principal of and any premium and interest on such notes on the stated maturity in accordance with the terms of the indenture and such notes. We will also be required, among other things, to deliver to the trustee an opinion of counsel to the effect that holders of such notes will not recognize gain or loss for federal income tax purposes as a result of such deposit, defeasance and discharge and will be subject to federal income tax on the same amount, in the same manner and at the same times as would have been the case if such deposit, defeasance and discharge were not to occur.

        In the event we exercised this option with respect to any notes and such notes were declared due and payable because of the occurrence of any event of default, the amount of money and U.S. government obligations so deposited in trust would be sufficient to pay amounts due on such notes at the time of their respective stated maturities but may not be sufficient to pay amounts due on such notes upon any acceleration resulting from such event of default. In such case, we would remain liable for such payments.

Amendment, Supplement and Waiver

        Except as provided in the next two succeeding paragraphs, the indenture or the notes may be amended or supplemented with the consent of the holders of at least a majority in principal amount of the notes then outstanding (including consents obtained in connection with a tender offer or exchange offer for such notes), and any existing default or compliance with certain restrictive provisions of the indenture may be waived with the consent of the holders of a majority in principal amount of the then outstanding notes (including consents obtained in connection with a tender offer or exchange offer for the notes).

        Without the consent of each holder affected, an amendment or waiver may not (with respect to any notes held by a non-consenting holder):

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        Notwithstanding the foregoing, without the consent of any holder of notes, we, together with the trustee, may amend or supplement the indenture to:

        Except in certain limited circumstances, we will be entitled to set any day as a record date for the purpose of determining the holders of notes entitled to give or take any direction, notice, consent, waiver or other action or to vote on any action under the indenture, in the manner and subject to the limitations provided in the indenture. In certain limited circumstances, the trustee will be entitled to set a record date for action by holders. If a record date is set for any action to be taken by holders, such action may be taken only by persons who are holders of outstanding notes on the record date. To be effective, the action must be taken by holders of the requisite principal amount of notes within a specified period following the record date. For any particular record date, this period will be 180 days or such shorter period as may be specified by us (or the trustee, if it set the record date), and may be shortened or lengthened from time to time, but not beyond 180 days.

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The Trustee

        The Bank of New York is the trustee under the indenture.

        We maintain banking relations with The Bank of New York. The Bank of New York also serves as escrow agent under an escrow agreement to which we are party. In addition, The Bank of New York is the trustee under other indentures pursuant to which we have issued debt. Pursuant to the Trust Indenture Act of 1939, should a default occur with respect to the notes, the trustee would be required to eliminate any conflicting interest as defined in the Trust Indenture Act or resign as trustee with respect to the notes within 90 days of such default unless such default were cured, duly waived or otherwise eliminated.

        The trustee may resign at any time or may be removed by us. If the trustee resigns, is removed or becomes incapable of acting as trustee or if a vacancy occurs in the office of the trustee for any cause, a successor trustee shall be appointed in accordance with the provisions of the indenture. The indenture provides that in case an event of default occurs (and is not cured), the trustee will be required, in the exercise of its power, to use the degree of care of a prudent man in the conduct of his own affairs. Subject to such provisions, the trustee will be under no obligation to exercise any of its rights or powers under the indenture at the request of any holder of notes, unless such holder has offered to the trustee security and indemnity satisfactory to it against any loss, liability or expense.

Global Notes

        The new notes will be issued in the form of one or more registered notes in book-entry form, referred to as global notes. Each such global note will be registered in the name of a nominee of DTC, as depositary, and will be deposited with DTC or a nominee thereof or custodian therefor. Interest in each such global note will not be exchangeable for certificated notes in definitive, fully registered form, except in the limited circumstances described below. We will be entitled, along with the trustee and any other agent, to treat DTC or its nominee, as the case may be, as the sole owner and holder of the global notes for all purposes.

        So long as DTC or its nominee or a common depositary is the registered holder of a global note, DTC or such nominee or common depositary, as the case may be, will be considered the sole owner and holder of such global note, and of the notes represented thereby, for all purposes under the indenture and the notes and the beneficial owners of notes will be entitled only to those rights and benefits afforded to them in accordance with DTC's regular operating procedures. Upon specified written instructions of a DTC participant, DTC will have its nominee assist its participants in the exercise of certain holders' rights, such as a demand for acceleration or an instruction to the trustee. Except as provided below, owners of beneficial interests in a global note will not be entitled to have notes represented by a global note registered in their names, will not receive or be entitled to receive physical delivery of notes in certificated form and will not be considered the registered holders thereof under the indenture.

        Ownership of beneficial interests in a global note will be limited to DTC participants or persons who hold interests through DTC participants. Upon the issuance of a global note, DTC or its custodian will credit on its internal system the respective principal amount of the individual beneficial interest represented by such global note to the accounts of its participants. Ownership of beneficial interests in a global note will be shown on, and the transfer of those ownership interests will be effected through, records maintained by DTC or its nominee (with respect to interests of participants) or by any such participant (with respect to interests of persons held by such participants on their behalf). Payments, transfers, exchanges and other matters relating to beneficial interests in a global note may be subject to various policies and procedures adopted by DTC from time to time. None of Tenet Healthcare Corporation, the trustee or any of their agents will have any responsibility or liability for any aspect of DTC's or any DTC participant's records relating to, or for payments made on account of, beneficial

30


interest in any global note, or for maintaining, supervising or reviewing any records relating to such beneficial interests.

        DTC has advised us that it is a limited-purpose trust company organized under the New York Banking Law, a "banking organization" within the meaning of the New York Banking Law, a member of the Federal Reserve System, a "clearing corporation" within the meaning of the New York Uniform Commercial Code and a "clearing agency" registered pursuant to the provisions of Section 17A of the Securities Exchange Act of 1934, as amended. DTC holds certificates that its participants deposit with DTC. DTC also facilitates the settlement among participants of securities transactions, such as transfers and pledges, in deposited securities through electronic computerized book-entry changes in participants' accounts, thereby eliminating the need for the physical movement of securities certificates. Participants include securities brokers and dealers, banks, trust companies, clearing corporations and certain other organizations. DTC is owned by a number of its direct participants and by the New York Stock Exchange, Inc., the American Stock Exchange, Inc. and the National Association of Securities Dealers, Inc. Access to the DTC system is also available to others such as securities brokers and dealers, banks and trust companies that clear through or maintain a custodial relationship with a direct participant, either directly or indirectly. The rules applicable to DTC and its participants are on file with the SEC.

        Interests in a global note will be exchanged for notes in certificated form if:

Upon the occurrence of such an event, owners of beneficial interests in such global note will receive physical delivery of notes in certificated form. All certificated notes issued in exchange for an interest in a global note or any portion thereof will be registered in such names as DTC directs. Such notes will be issued in minimum denominations of $1,000 and integral multiples thereof and will be in registered form only, without coupons.

        No beneficial owner of an interest in a global note will be able to transfer that interest except in accordance with DTC's or the applicable DTC participant's procedures, in addition to those under the indenture and the notes.

        Investors may hold their interest in a global note directly through DTC if they are participants or indirectly through organizations that are DTC participants. Accordingly, although owners who hold notes through DTC participants will not possess notes in definitive form, the participants provide a mechanism by which holders of notes will receive payments and will be able to transfer their interests.

        The holder of a certificated note may transfer such note, subject to compliance with the provisions of such legend, by surrendering it at (i) the office or agency maintained by us for such purpose in the Borough of Manhattan, The City of New York, which initially will be the office of the trustee maintained for such purpose or (ii) the office of any transfer agent we appoint.

        We will make all payments of principal and interest on the notes in immediately available funds so long as the notes are maintained in the form of global notes.

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Governing Law

        The indenture provides and the new notes will provide that they are and shall be governed by, and interpreted in accordance with, the internal laws of the State of New York.


DESCRIPTION OF OLD NOTES

        The terms of the old notes are identical in all material respects to those of the new notes, except that (1) the old notes have not been registered under the Securities Act, are subject to certain restrictions on transfer and are entitled to certain rights under the registration rights agreement (which rights will terminate upon consummation of the exchange offer, except under limited circumstances); and (2) the new notes will not provide for any additional interest as a result of our failure to fulfill certain registration obligations. The old notes provide that, in the event that the exchange offer is not consummated within 30 business days after the date of effectiveness of the registration statement in which this prospectus is included, or, in certain limited circumstances, in the event a shelf registration statement with respect to the resale of the old notes is not filed within 30 days from the date on which the obligation to file such shelf registration statement arises or is not declared effective within 90 days after such filing, then special interest will accrue on the old notes (in addition to the interest rate on the old notes) for the period from the occurrence of such event until the earlier of such time as the exchange offer is consummated or any required shelf registration statement is effective. During the time that the special interest is accruing continuously, the rate of such special interest shall be 0.25% per annum during the first 90-day period and shall increase by 0.25% per annum for each subsequent 90-day period, but in no event shall such rate exceed 1.0% per annum. The new notes are not, and upon consummation of the exchange offer with respect to the old notes will not be, entitled to any such special interest. Accordingly, holders of old notes should review the information set forth under "Risk Factors" and "Description of New Notes."


CERTAIN FEDERAL INCOME TAX CONSIDERATIONS

        The exchange of an old note for a new note should not be a taxable event for United States federal income tax purposes. Accordingly, a holder should not recognize gain or loss for United States federal income tax purposes on an exchange of an old note for a new note and such holder's holding period for a new note will include the holding period for the old note so exchanged.


PLAN OF DISTRIBUTION

        Each broker-dealer that receives new notes for its own account in connection with the exchange offer must acknowledge that it will deliver a prospectus in connection with any resale of such new notes. This prospectus, as it may be amended or supplemented from time to time, may be used by such broker-dealers during the period referred to below in connection with resales of new notes received in exchange for old notes if such old notes were acquired by such broker-dealers for their own accounts as a result of marketing-making activities or other trading activities. We have agreed that this prospectus, as it may be amended or supplemented from time to time, may be used by such broker-dealers in connection with resales of such new notes for a period ending 180 days after the expiration date of the exchange offer, or, if earlier, when all new notes subject to the exchange offer have been disposed of by such broker-dealers.

        We will not receive any proceeds from the issuance of new notes in the exchange offer or from any sale of new notes by broker-dealers. New notes received by broker-dealers for their own accounts may be sold from time to time in one or more transactions in the over-the-counter market, in negotiated transactions, through the writing of options on the new notes or a combination of such methods of resale, at market prices prevailing at the time of resale at prices related to such prevailing market prices or at negotiated prices. Any such resale may be made directly to purchasers or to or through

32


brokers or dealers who may receive compensation in the form of commissions or concessions from any such broker-dealer and/or the purchasers of any such new notes. Any broker-dealer that resells new notes that were received by it for its own account in connection with the exchange offer and any broker or dealer that participates in a distribution of such new notes may be deemed to be an "underwriter" within the meaning of the Securities Act, and any profit on any such resale of new notes may be deemed to be underwriting compensation under the Securities Act. The letter of transmittal states that by acknowledging that it will deliver and by delivering a prospectus, a broker-dealer will not be deemed to admit that it is an "underwriter" within the meaning of the Securities Act.


VALIDITY OF THE NOTES

        The validity of the new notes offered hereby will be passed upon for us by Sullivan & Cromwell LLP, Los Angeles, California and certain matters of Nevada law relating to the validity of the new notes will be passed upon for us by Woodburn and Wedge, Reno, Nevada.


EXPERTS

        Our consolidated financial statements and the related consolidated financial statement schedule as of December 31, 2004 and 2003, and for the years ended December 31, 2004 and 2003, the seven-month transition period ended December 31, 2002 and the fiscal year ended May 31, 2002, and management's assessment of the effectiveness of internal control over financial reporting as of December 31, 2004 have been incorporated by reference herein and in the registration statement in reliance upon the reports of KPMG LLP, an independent registered public accounting firm, incorporated by reference herein, and upon the authority of said firm as experts in accounting and auditing. The audit report of KPMG LLP covering the December 31, 2004 consolidated financial statements refers to a change in the method of accounting for goodwill and other intangible assets effective June 1, 2002.


AVAILABLE INFORMATION

        We file annual, quarterly and periodic reports, as well as other information, with the SEC. Our SEC filings are available to the public over the Internet at the SEC's web site: http://www.sec.gov. The documents we file with the SEC may also be read and copied at the SEC's public reference rooms in Washington, D.C. Reports and other information concerning us can also be inspected and copied at the offices of the New York Stock Exchange at 20 Broad Street, New York, New York 10005, and the Pacific Stock Exchange at 618 South Spring Street, Los Angeles, California 90014 and 301 Pine Street, San Francisco, California 94104.

        We have filed with the SEC a registration statement on Form S-4 under the Securities Act with respect to the new notes offered hereby. This prospectus does not contain all the information set forth in the registration statement, certain portions of which have been omitted as permitted by the rules and regulations of the SEC. For further information with respect to us and the notes offered hereby, reference is made to the registration statement and the exhibits thereto and the financial statements, notes and reference facilities of the SEC referred to above. Statements made in this prospectus concerning the contents of any documents referred to in this prospectus are not necessarily complete, and in each instance are qualified in all respects by reference to the copy of the document filed as an exhibit to the registration statement.

        With respect to any old securities which are not yet eligible to be resold pursuant to Rule 144(h) under the Securities Act or new securities which have not been disposed of by a broker-dealer pursuant to the "Plan of Distribution" section, we have undertaken to furnish upon request of a holder or prospective purchaser of a note the information required to be delivered under Rule 144A(d)(4) if, at the time of such request, we are no longer a reporting company under Section 13 or 15(d) of the Exchange Act.

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INCORPORATION BY REFERENCE

        The following documents filed with the SEC are incorporated by reference into this prospectus:

        All documents filed by us pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act, subsequent to the date of this prospectus until this offering is completed will be deemed to be incorporated by reference into this prospectus from the date of filing of such documents. Any statement contained herein or incorporated by reference herein will be deemed to be modified or superseded for purposes of this prospectus to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed incorporated by reference in this prospectus modifies or supersedes such statement. Any such statement so modified or superseded will not be deemed to constitute a part of this prospectus, except as so modified or superseded.

        We will provide without charge to each person to whom this prospectus is delivered, upon oral or written request, a copy of any or all of the documents incorporated herein by reference (other than exhibits to such documents, unless such exhibits are specifically incorporated by reference in such documents). Written or telephone requests should be directed to us at the following address:

        In order to obtain timely delivery, you must request this information no later than                        , 2005.

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$800,000,000

Tenet Healthcare Corporation

9.250% Senior Notes due 2015

PROSPECTUS

                      , 2005

        All tendered old notes, executed letters of transmittal and other related documents should be directed to the exchange agent at the numbers and address below. Requests for assistance and for additional copies of the prospectus, the letter of transmittal and other related documents should also be directed to the exchange agent.

The exchange agent for the exchange offer is:

THE BANK OF NEW YORK

By Facsimile for Eligible Institutions:
(212) 298-1915
Attention: David Mauer

Confirm by telephone:
(212) 815-2548

By Mail/Overnight Courier/Hand:
The Bank of New York
Reorganization Unit
101 Barclay Street, 7E
New York, New York 10286
Attention: David Mauer


PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 20.    INDEMNIFICATION OF DIRECTORS AND OFFICERS.

        Section 78.7502 of the Nevada Revised Statutes Annotated ("Nevada RSA") provides generally, and in pertinent part, that a Nevada corporation may indemnify its directors and officers against expenses, judgments, fines, and settlements actually and reasonably incurred by them in connection with any civil suit or action, except actions by or in the right of the corporation, or any administrative or investigative proceeding if, in connection with the matters in issue, they are not liable pursuant to Section 78.138 of the Nevada RSA for having breached their fiduciary duties where such breach involved intentional misconduct, fraud or a knowing violation of the law, or they acted in good faith and in a manner they reasonably believed to be in, or not opposed to, the best interests of the corporation, and in connection with any criminal suit or proceeding, if in connection with the matters in issue, they had no reasonable cause to believe their conduct was unlawful. Section 78.7502 of the Nevada RSA further provides that, in connection with the defense or settlement of any action by or in the right of a Nevada corporation, a Nevada corporation may indemnify its directors and officers against expenses actually and reasonably incurred by them if, in connection with the matters in issue, they are not liable pursuant to Section 78.138 of the Nevada RSA for having breached their fiduciary duties where such breach involved intentional misconduct, fraud or a knowing violation of the law, or they acted in good faith, in a manner they reasonably believed to be in, or not opposed to, the best interest of the corporation. In the case of actions brought by or in the right of the corporation, indemnification may not be made to an officer or director who is ultimately adjudged liable, unless, and only to the extent, that the court in which the action was brought (or another court of competent jurisdiction) determines that the person is fairly and reasonably entitled to indemnification, and then only for such expenses as the court deems proper.

        Section 78.751 of the Nevada RSA permits a Nevada corporation to grant its directors and officers additional rights of indemnification in its articles of incorporation and bylaws or by agreement. Article X of the registrant's Restated Bylaws, as amended, provides that it will have the power to indemnify its directors and officers to the fullest extent permitted by Nevada law. Its Restated Bylaws also permit it to enter into agreements with any director or officer indemnifying him to the fullest extent permitted by Nevada law.

        Section 78.138 of the Nevada RSA provides that except as otherwise provided under Nevada law, or unless the articles of incorporation or an amendment thereto, in each case filed on or after October 1, 2003, provide for greater individual liability, a director or officer is not individually liable to the corporation or its stockholders or creditors for any damages as a result of any act or failure to act in his capacity as a director or officer unless it is proven that his act or failure to act constituted a breach of fiduciary duties as a director or officer and his breach of those duties involved intentional misconduct, fraud or a knowing violation of the law. Article IX of the registrant's Articles, adopted July 23, 2003, contains a provision eliminating the liability of directors and officers for breach of fiduciary duty except for liability for acts or omissions which involve intentional misconduct, fraud or a knowing violation of law or for the payment of dividends in violation of Section 78.300 of the Nevada RSA.

ITEM 21.    EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.

        See Exhibit Index on Page II-6.

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ITEM 22.    UNDERTAKINGS.

        (a)   The undersigned registrant hereby undertakes:

        (b)   Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the

II-2

question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

        (c)   The undersigned registrant hereby undertakes to respond to requests for information that is incorporated by reference into the prospectus pursuant to Items 4, 10(b), 11, or 13 of this Form S-4, within one business day of receipt of such request, and to send the incorporated documents by first class mail or other equally prompt means. This includes information contained in documents filed subsequent to the effective date of the registration statement through the date of responding to the request.

        (d)   The undersigned registrant hereby undertakes to supply by means of a post-effective amendment all information concerning a transaction, and the company being acquired involved therein, that was not the subject of and included in the registration statement when it became effective.

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SIGNATURES

        Pursuant to the requirements of the Securities Act, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Dallas, State of Texas, on April 7, 2005.

    TENET HEALTHCARE CORPORATION

 
 
By:
/s/  E. PETER URBANOWICZ          
Name: E. Peter Urbanowicz
Title: Secretary and General Counsel

        KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints each of Trevor Fetter, Robert S. Shapard and E. Peter Urbanowicz, acting alone, his/her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him/her and in his/her name, place and stead, in any and all capacities, to sign and file any and all amendments (including post-effective amendments) to this registration statement, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises as fully to all intents and purposes as he/she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them, or their or his substitutes or substitute, may lawfully do or cause to be done by virtue hereof.

        Pursuant to the requirements of the Securities Act, this registration statement has been signed by the following persons in the capacities indicated on April 7, 2005:

Signature
   Title

 
 
 
/s/  TREVOR FETTER      
Trevor Fetter		   President, Chief Executive Officer and Director
 (Principal Executive Officer)

/s/  ROBERT S. SHAPARD      
Robert S. Shapard
 
Chief Financial Officer
 (Principal Financial Officer)

/s/  TIMOTHY L. PULLEN      
Timothy L. Pullen
 
Executive Vice President and Chief Accounting Officer
 (Principal Accounting Officer)

/s/  BRENDA J. GAINES      
Brenda J. Gaines
 
Director

/s/  KAREN M. GARRISON      
Karen M. Garrison
 
Director

/s/  VAN B. HONEYCUTT      
Van B. Honeycutt
 
Director
     

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/s/  JOHN C. KANE      
John C. Kane
 
Director

/s/  EDWARD A. KANGAS      
Edward A. Kangas
 
Director

/s/  J. ROBERT KERREY      
J. Robert Kerrey
 
Director

/s/  FLOYD D. LOOP      
Floyd D. Loop, M.D.
 
Director

/s/  MÓNICA C. LOZANO      
Mónica C. Lozano
 
Director

/s/  RICHARD R. PETTINGILL      
Richard R. Pettingill
 
Director

/s/  J. MCDONALD WILLIAMS      
J. McDonald Williams
 
Director

/s/  JAMES A. UNRUH      
James A. Unruh
 
Director

II-5


EXHIBIT INDEX

3.1   Amended and Restated Articles of Incorporation of Registrant, as amended and restated July 23, 2003 (Incorporated by reference to Exhibit 3(a) to Registrant's Quarterly Report on Form 10-Q for the fiscal quarter ended June 30, 2003)

3.2
 
Amended and Restated Bylaws of Registrant, as amended and restated November 6, 2003 (Incorporated by reference to Exhibit 3(b) to Registrant's Quarterly Report on Form 10-Q for the fiscal quarter ended September 30, 2003)

4.1
 
Indenture, dated as of November 6, 2001, between Registrant and The Bank of New York, as Trustee (Incorporated by reference to Exhibit 4.1 to Registrant's Current Report on Form 8-K, dated November 6, 2001)

4.2
 
Eighth Supplemental Indenture, dated as of January 28, 2005, between Registrant and The Bank of New York, as Trustee (Incorporated by reference to Exhibit 4(g) to Registrant's Annual Report on Form 10-K for the year ended December 31, 2004)

4.3
 
Exchange and Registration Rights Agreement, dated as of January 28, 2005, among Registrant and Citigroup Global Markets Inc., Banc of America Securities LLC, Scotia Capital (USA) Inc. and SunTrust Capital Markets Inc., as representatives of the initial purchasers named therein

5.1
 
Opinion of Woodburn and Wedge

5.2
 
Opinion of Sullivan & Cromwell LLP

12.1
 
Computation of ratio of earnings to fixed charges for Registrant

23.1
 
Consent of KPMG LLP

23.2
 
Consent of Woodburn and Wedge (included in Exhibit 5.1)

23.3
 
Consent of Sullivan & Cromwell LLP (included in Exhibit 5.2)

24.1
 
Power of Attorney (included on signature page of the registration statement)

25.1
 
Statement of Eligibility on Form T-1 of The Bank of New York, as the Trustee under the indenture

99.1
 
Form of letter of transmittal

99.2
 
Form of notice of guaranteed delivery

99.3
 
Form of letter to brokers, dealers, commercial banks, trust companies and other nominees

99.4
 
Form of letter to clients

99.5
 
Form of Exchange Agent Agreement

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TABLE OF CONTENTS
SUMMARY
RISK FACTORS
USE OF PROCEEDS
SELECTED FINANCIAL INFORMATION
THE EXCHANGE OFFER
DESCRIPTION OF NEW NOTES
DESCRIPTION OF OLD NOTES
CERTAIN FEDERAL INCOME TAX CONSIDERATIONS
PLAN OF DISTRIBUTION
VALIDITY OF THE NOTES
EXPERTS
AVAILABLE INFORMATION
INCORPORATION BY REFERENCE
PART II INFORMATION NOT REQUIRED IN PROSPECTUS
SIGNATURES
EXHIBIT INDEX