UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q/A

(Amendment No. 1)

(Mark One)

For the quarterly period ended September 30, 2011

or

For the transition period from                  to

Commission File Number: 333-175188

Capella Healthcare, Inc.

(Exact name of registrant as specified in its charter)

(615) 764-3000

(Registrant’s telephone number, Including area code)

Not Applicable

(Former name, former address and former fiscal year, if changed since last report)

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 ¨ No x

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 (§232.405 of this chapter) 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:

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 November 11, 2011, 1,000 shares of the registrant’s Common Stock were outstanding.

EXPLANATORY NOTE

The sole purpose of this Amendment to the Quarterly Report on Form 10-Q of Capella Healthcare, Inc. (the “Company”) for the period ended September 30, 2011, filed with the Securities and Exchange Commission on November 14, 2011 (the “Form 10-Q”), is to furnish the Interactive Data Files on Exhibit 101. As permitted by Rule 405(a)(2)(ii) of Regulation S-T, the Company is furnishing the Interactive Data Files on Exhibit 101 by amendment within 30 days of the original filing date of the Form 10-Q. No other changes have been made to the Form 10-Q, and this Amendment has not been updated to reflect events occurring subsequent to the filing of the Form 10-Q.

Pursuant to Rule 406T of Regulation S-T, the Interactive Data Files on Exhibit 101 are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are otherwise not subject to liability under those sections.

2

3

4

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.

Date: December 13, 2011

EXHIBIT INDEX