Dr Oscar John Ma

Dr. Oscar John Ma is a highly accomplished medical professional. His postgraduate training was highly diverse, starting with a preliminary internship in internal medicine at the Washington Hospital Center in Washington, D.C., from 1990 to 1991. In 1991, he started a residency in emergency medicine at the Medical College of Wisconsin in Milwaukee and served as Chief Resident from 1993 to 1994. He has also been certified by the American Board of Emergency Medicine.