Karl John Koa, M.D. is a radiologist with extensive clinical experience, currently holding positions at Chong Hua Hospital, The Hospital at Maayo, VisayasMed Hospital, Aurora Medical Doctors Diagnostic and Imaging Center as Head Radiologist, Gov. Celestino Gallares Memorial Hospital, Aurora Memorial Hospital as Head of the Department of Radiology, Hi-Precision Diagnostics, and Maxicare Healthcare Corporation. In June 2024, Karl Koa will serve as a Clinical Fellow in Abdominal Imaging at Hospital Beaujon, focusing on the liver, biliary system, and pancreas, and previously completed a Clinical Observer Fellowship at Massachusetts General Hospital from September to November 2023. Karl Koa obtained a Doctor of Medicine (MD) degree from West Visayas State University in 2014, following a registered nursing degree from the same institution in 2009.