Dr. Douglas Mah, MD, is a highly regarded pediatric cardiologist based in Boston, MA, with over 19 years of experience in the medical field. He specializes in Pediatric Cardiology and Clinical Cardiac Electrophysiology, leading the Pacemaker and Defibrillator program at Boston Children's Hospital. Dr. Mah's medical education includes completing medical school at McMaster University and pediatric residency training at Johns Hopkins Hospital....