ElderTrust Operating Limited Partnership 10-Q 2005 Q2 Quarterly report

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 Quarterly Report on Form 10-Q of ElderTrust Operating Limited Partnership (the “Partnership”) for the period ended June 30, 2005, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Debra A. Cafaro, President and Chief Executive Officer of ElderTrust, the General Partner of the Partnership, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

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

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Partnership.

Date: August 15, 2005

/s/ Debra A. Cafaro

Debra A. Cafaro

President and Chief Executive Officer of ElderTrust,

the General Partner of ElderTrust Operating Limited Partnership

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