Karen Frances B. Mason, MD, FPCP, DPSE Gastroenterology Clinic Schedule: By Appointment See also different: Catherine C. Guerrero, MDCrisanta Gabriela B. Palabay , MD, FPCP, FPCCPJoeffrey L. Zales, MDMelvin R. Hacutina, MD, FPCP, DPSEVicky Ann S. Bautista, MD<< return to doctors