Genoveva Sibayan, MD, FPCP Internal Medicine Clinic Schedule: By Appointment See also different: Allan D. Corpuz, MD, FPCP, DPRAFelixberto R. Fangonil, MD, FPCPKaren Frances B. Mason, MD, FPCP, DPSEMa. Ana C. Tolentino, MD, FPCP, FPSG, FPSDEThelma Doris D. Gurion, MD<< return to doctors