UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 10-Q/A

Amendment No. 1

(Mark One)

For the quarterly period ended June 30, 2012

Or

Commission File Number 000-33009

MEDCATH CORPORATION

(Exact name of registrant as specified in its charter)

10720 Sikes Place

Charlotte, North Carolina 28277

(Address of principal executive offices, including zip code)

(704) 815-7700

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

As of August 8, 2012, there were 20,350,790 shares of $0.01 par value common stock outstanding.

EXPLANATORY NOTE

This Amendment No. 1 to the Quarterly Report on Form 10-Q/A (the “Amendment”) amends the Quarterly Report on Form 10-Q of MedCath Corporation (the “Company”) for the quarter ended June 30, 2012 (the “Original Filing”), that was originally filed with the U.S. Securities and Exchange Commission on August 9, 2012. The Amendment is being filed to submit Exhibit 101. The Amendment revises the exhibit index included in Part II, Item 6 of the Original Filing and Exhibit 101 (XBRL interactive data) is included as an exhibit to the Amendment.

In addition, as required by Rule 12b-15 under the Securities Exchange Act of 1934, as amended (“Exchange Act”), new certifications by the Company’s principal executive officer and principal financial officers are filed as exhibits hereto.

Except as described above, the Amendment does not modify or update the disclosures presented in, or exhibits to, the Original Filing in any way. Those sections of the Original Filing that are unaffected by the Amendment are not included herein. The Amendment continues to speak as of the date of the Original Filing. Furthermore, the Amendment does not reflect events occurring after the filing of the Original Filing. Accordingly, the Amendment should be read in conjunction with the Original Filing, as well as the Company’s other filings made with the SEC pursuant to Section 13(a) or 15(d) of the Exchange Act subsequent to the filing of the Original Filing

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Item 6. Exhibits

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

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INDEX TO EXHIBITS

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