Gerard Martin, M.D., FAAP, FACC, FAHA, is a cardiologist at Children's National Hospital, where he has been in practice since 1986. Dr. Martin was promoted to professor of pediatrics (with tenure) at George Washington University School of Medicine & Health Sciences in 1995 and served as the chief of cardiology, 1997-2009, and senior vice president for the Center for Heart, Lung and Kidney ....