EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Universal Health Realty Income Trust (the “Trust”) on Form 10-K for the year ended December 31, 2006 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Alan B. Miller, President and Chief Executive Officer of the Trust, hereby certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(i) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Trust at the end of, and for the period covered by the Report.

/s/ Alan B. Miller

President and Chief Executive Officer

March 14, 2007

A signed original of this written statement required by Section 906 has been provided to the Trust and will be retained and furnished to the Securities and Exchange Commission or its staff upon request.