EXHIBIT 32.1 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 I, Richard C. Pfenniger, Jr., hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that: (1) The accompanying quarterly report on Form 10-Q for the three-month period ended September 30, 2003, fully complies with the requirements of Section 13(a) or Section 15 (d) of the Securities Exchange Act of 1934, as amended; and (2) The information contained in such report fairly presents, in all material respects, the financial condition and result of operations of Continucare Corporation. Date: November 13, 2003 By: /s/ Richard C. Pfenniger, Jr. ------------------------------------- RICHARD C. PFENNIGER, JR. Chief Executive Officer and President 1