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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">UNITED STATES</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Washington, DC&#160; 20549</font></b></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM&nbsp;8-K</font></b></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">CURRENT REPORT</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">Pursuant to Section&nbsp;13 or 15(d)&nbsp;of</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">the Securities Exchange Act of 1934</font></b></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date of Report:&#160; <b>August&nbsp;6, 2013</b></font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Date of earliest event reported)</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">TENET HEALTHCARE CORPORATION</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of Registrant as specified in its charter)</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Nevada</font></b></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">1-7293</font></b></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">95-2557091</font></b></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State of Incorporation)</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(IRS Employer</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Identification Number)</font></p>    </td>   </tr>  </table>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">1445 Ross Avenue, Suite&nbsp;1400</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Dallas, Texas&#160; 75202</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of principal executive offices, including zip code)</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(469) 893-2200</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Registrant&#146;s telephone number, including area code)</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the appropriate box below if the Form&nbsp;8-K filing is intended to simultaneously satisfy the filing obligation of the Registrant under any of the following provisions:</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425)</font></p>
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<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></p>
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<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Pre-commencement communications pursuant to Rule&nbsp;14d-2(b)&nbsp;under the Exchange Act (17 CFR 240.14d-2(b))</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Pre-commencement communications pursuant to Rule&nbsp;13e-4(c)&nbsp;under the Exchange Act (17 CFR 240.13e-4(c))</font></p>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 2.02&#160;&#160;&#160;&#160;&#160; Results of Operations and Financial Condition.</font></b></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The information contained herein is being furnished pursuant to Item 2.02 of Form&nbsp;8-K, &#147;Results of Operations and Financial Condition.&#148;&#160; This information shall not be deemed &#147;filed&#148; for purposes of Section&nbsp;18 of the Securities Exchange Act of 1934, as amended (the &#147;Exchange Act&#148;), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On August&nbsp;6, 2013, Tenet Healthcare Corporation (the &#147;Company&#148;) issued a press release reporting the financial results of the Company for the quarter ended June&nbsp;30, 2013.&#160; A copy of the press release is attached to this report as Exhibit&nbsp;99.1 and incorporated herein by reference.</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS</font></b></p>
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<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Certain statements contained in the press release filed as an exhibit to this report constitute &#147;forward-looking statements&#148; within the meaning of Section&nbsp;27A of the Securities Act of 1933 and Section&nbsp;21E of the Securities Exchange Act of 1934.&#160; Such forward-looking statements are based on management&#146;s current expectations and involve known and unknown risks, uncertainties and other factors that may cause the Company&#146;s actual results to be materially different from those expressed or implied by such forward-looking statements.&#160; Such factors include, among others, the following: the passage of health care reform legislation and the enactment of additional federal and state health care reform; other changes in federal, state and local laws and regulations affecting the health care industry; general economic and business conditions, both nationally and regionally; demographic changes; changes in, or the failure to comply with, laws and governmental regulations; the ability to enter into managed care provider arrangements on acceptable terms; changes in Medicare and Medicaid payments or reimbursement; liability and other claims asserted against the Company; competition, including the Company&#146;s ability to attract patients to its hospitals; technological and pharmaceutical improvements that increase the cost of providing, or reduce the demand for, health care; changes in business strategy or development plans; the ability to attract and retain qualified personnel, including physicians, nurses and other health care professionals, and the impact on the Company&#146;s labor expenses resulting from a shortage of nurses or other health care professionals; the significant indebtedness of the Company; the Company&#146;s ability to integrate new businesses with its existing operations; the availability and terms of capital to fund the expansion of the Company&#146;s business, including the acquisition of additional facilities; the creditworthiness of counterparties to the Company&#146;s business transactions; adverse fluctuations in interest rates and other risks related to interest rate swaps or any other hedging activities the Company undertakes; the ability to continue to expand and realize earnings contributions from the revenue cycle management, health care information management, capitation management, and patient communications services businesses under our Conifer Health Solutions (&#147;Conifer&#148;) subsidiary by marketing these services to third party hospitals and other health care-related entities; the Company&#146;s ability to identify and execute on measures designed to save or control costs or streamline operations; the occurrence of any event, change or other circumstances that could give rise to the termination of the Company&#146;s merger agreement with Vanguard Health Systems,&nbsp;Inc. (&#147;Vanguard&#148;); the failure to satisfy conditions to completion of the proposed merger, including receipt of regulatory approvals; and changes in the business or operating prospects of Vanguard.&#160; Such factors also include the positive and negative effects of health reform legislation on reimbursement and utilization and the future designs of provider networks and insurance plans, including pricing, provider participation, coverage and co-pays and deductibles, all of which contain significant uncertainty, and for which multiple models exist which may differ materially from the Company&#146;s expectations.&#160; Certain additional risks and uncertainties are discussed in the Company&#146;s filings with the Securities and Exchange Commission, including the Company&#146;s annual report on Form&nbsp;10-K and quarterly reports on Form&nbsp;10-Q.&#160; All information in this report and the press release is</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2<a name="PB_2_035919_7056"></a></font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">as of August&nbsp;6, 2013.&#160; The Company specifically disclaims any obligation to update any forward-looking statement, whether as a result of changes in underlying factors, new information, future events or otherwise.</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">NON-GAAP INFORMATION</font></b></p>
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<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The press release filed as an exhibit to this report includes certain financial measures, such as adjusted EBITDA, that are not calculated in accordance with generally accepted accounting principles (GAAP).&#160; Management recommends that you focus on the GAAP numbers as the best indicator of financial performance.&#160; These alternative measures are provided only as a supplement to aid in analysis of the Company.&#160; Reconciliation between non-GAAP measures and related GAAP measures can be found at the end of the press release.</font></p>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 9.01&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Financial Statements and Exhibits.</font></b></p>
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<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Exhibits</font></p>
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<p style="margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1&#160;&#160;&#160;&#160;&#160;&#160;&#160; Press Release issued on August&nbsp;6, 2013</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURE</font></b></p>
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<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">TENET   HEALTHCARE CORPORATION</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/   Daniel J. Cancelmi</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Daniel   J. Cancelmi</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief   Financial Officer</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date:   August&nbsp;6, 2013</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4<a name="PB_4_040215_5796"></a></font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">EXHIBIT&nbsp;INDEX</font></b></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1&#160;&#160;&#160;&#160;&#160;&#160;&#160; Press Release issued on August&nbsp;6, 2013</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5<a name="PB_5_040230_2897"></a></font></p>
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{"company-data": {"conformed-name": "TENET HEALTHCARE CORP", "cik": "0000070318", "assigned-sic": "8062", "irs-number": "952557091", "state-of-incorporation": "NV", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-07293", "film-number": "131011841"}, "business-address": {"street1": "1445 ROSS AVENUE", "street2": "SUITE 1400", "city": "DALLAS", "state": "TX", "zip": "75202", "phone": "469-893-2701"}, "mail-address": {"street1": "1445 ROSS AVENUE", "street2": "SUITE 1400", "city": "DALLAS", "state": "TX", "zip": "75202"}, "former-company": {"former-conformed-name": "NATIONAL MEDICAL ENTERPRISES INC /NV/", "date-changed": "19920703"}}
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC  20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of
the Securities Exchange Act of 1934
Date of Report:
August 6, 2013
(Date of earliest event reported)
TENET HEALTHCARE CORPORATION
(Exact name of Registrant as specified in its charter)
Nevada
1-7293
95-2557091
(State of Incorporation)
(Commission File Number)
(IRS Employer
Identification Number)
1445 Ross Avenue, Suite 1400
Dallas, Texas  75202
(Address of principal executive offices, including zip code)
(469) 893-2200
(Registrant's telephone number, including area code)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the Registrant under any of the following provisions:
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 2.02      Results of Operations and Financial Condition.
The information contained herein is being furnished pursuant to Item 2.02 of Form 8-K, "Results of Operations and Financial Condition."  This information shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.
On August 6, 2013, Tenet Healthcare Corporation (the "Company") issued a press release reporting the financial results of the Company for the quarter ended June 30, 2013.  A copy of the press release is attached to this report as Exhibit 99.1 and incorporated herein by reference.
CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS
Certain statements contained in the press release filed as an exhibit to this report constitute "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934.  Such forward-looking statements are based on management's current expectations and involve known and unknown risks, uncertainties and other factors that may cause the Company's actual results to be materially different from those expressed or implied by such forward-looking statements.  Such factors include, among others, the following: the passage of health care reform legislation and the enactment of additional federal and state health care reform; other changes in federal, state and local laws and regulations affecting the health care industry; general economic and business conditions, both nationally and regionally; demographic changes; changes in, or the failure to comply with, laws and governmental regulations; the ability to enter into managed care provider arrangements on acceptable terms; changes in Medicare and Medicaid payments or reimbursement; liability and other claims asserted against the Company; competition, including the Company's ability to attract patients to its hospitals; technological and pharmaceutical improvements that increase the cost of providing, or reduce the demand for, health care; changes in business strategy or development plans; the ability to attract and retain qualified personnel, including physicians, nurses and other health care professionals, and the impact on the Company's labor expenses resulting from a shortage of nurses or other health care professionals; the significant indebtedness of the Company; the Company's ability to integrate new businesses with its existing operations; the availability and terms of capital to fund the expansion of the Company's business, including the acquisition of additional facilities; the creditworthiness of counterparties to the Company's business transactions; adverse fluctuations in interest rates and other risks related to interest rate swaps or any other hedging activities the Company undertakes; the ability to continue to expand and realize earnings contributions from the revenue cycle management, health care information management, capitation management, and patient communications services businesses under our Conifer Health Solutions ("Conifer") subsidiary by marketing these services to third party hospitals and other health care-related entities; the Company's ability to identify and execute on measures designed to save or control costs or streamline operations; the occurrence of any event, change or other circumstances that could give rise to the termination of the Company's merger agreement with Vanguard Health Systems, Inc. ("Vanguard"); the failure to satisfy conditions to completion of the proposed merger, including receipt of regulatory approvals; and changes in the business or operating prospects of Vanguard.  Such factors also include the positive and negative effects of health reform legislation on reimbursement and utilization and the future designs of provider networks and insurance plans, including pricing, provider participation, coverage and co-pays and deductibles, all of which contain significant uncertainty, and for which multiple models exist which may differ materially from the Company's expectations.  Certain additional risks and uncertainties are discussed in the Company's filings with the Securities and Exchange Commission, including the Company's annual report on Form 10-K and quarterly reports on Form 10-Q.  All information in this report and the press release is
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as of August 6, 2013.  The Company specifically disclaims any obligation to update any forward-looking statement, whether as a result of changes in underlying factors, new information, future events or otherwise.
NON-GAAP INFORMATION
The press release filed as an exhibit to this report includes certain financial measures, such as adjusted EBITDA, that are not calculated in accordance with generally accepted accounting principles (GAAP).  Management recommends that you focus on the GAAP numbers as the best indicator of financial performance.  These alternative measures are provided only as a supplement to aid in analysis of the Company.  Reconciliation between non-GAAP measures and related GAAP measures can be found at the end of the press release.
Item 9.01              Financial Statements and Exhibits.
(d)           Exhibits
99.1        Press Release issued on August 6, 2013
3
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
TENET   HEALTHCARE CORPORATION
By:
/s/   Daniel J. Cancelmi
Daniel   J. Cancelmi
Chief   Financial Officer
Date:   August 6, 2013
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EXHIBIT INDEX
99.1        Press Release issued on August 6, 2013
5