Nathaniel Y. Cortez, MD, FPCP, FPCC Cardiology Clinic Schedule: By Appointment See also different: Edward Vincent G. Gaerlan, MD Genoveva Sibayan, MD, FPCP Aprilyn T. Gagtan, MD Chester O. Directo, MD, DPCP Glenn Ernest Fonbuena, MD, FPCP, FPSG, FPSDE << return to doctors