DepartmentsLaboratory Medicine and PathologyLocationPhoenix, ArizonaLanguagesEnglishExisting patientsSend a secure message via patient portal Biographical summaryCathy Gebhart, Ph.D., is a board-certified fellow of the American College of Histocompatibility and Immunogenetics (ACHI). She serves as an Associate Director in the Histocompatibility Laboratory at the Mayo Clinic in Arizona. Dr. Gebhart is an immunology and molecular diagnostics expert with over 20 years of experience in bone marrow and solid organ transplant immunology, laboratory management, and clinical research. Mayo Clinic locations Phoenix, Arizona Driving directions More info Billing & insurance Accessibility services Biographical summaryMayo Clinic locations Request an appointment PST-20600289 Doctors & Medical Staff Gebhart, Cathy L. Ph.D.