Education / Graduate Medical Education / Prospective Residents / Urology Residency Program / Faculty Faculty Previous Chief Residents with Program Director and Program Chair Our Adult Urology Specialists Erdal Erturk, M.D. Thomas Patrick Frye, D.O. David P. Gentile, M.D., F.A.C.S. Ahmed Ghazi, M.D. Rajat K. Jain, M.D. Jean V. Joseph, M.D. Department Chairman Diane D. Lu, M.D. Joy Michaelides, M.D. Edward M. Messing, M.D., F.A.C.S. Hani H. Rashid, M.D. Program Director Scott Quarrier, M.D. Annette E. Sessions, M.D. Jeanne H. Sullivan O'Brien, M.D., M.P.H. Jared B. Wachterman, M.D. Gareth J.W. Warren, M.D. Guan Wu, M.D. Our Pediatric Urology Specialists Jimena Cubillos, M.D. Ronald Rabinowitz, M.D. Our Researchers Chawnshang Chang, Ph.D. Yi-Fen Lee, Ph.D. Shu-Yuan Yeh, Ph.D. Guan Wu, Ph.D. Emeritus Faculty Robert S. Davis, M.D.