I received my medical degree from the Harvard Medical School in 1974 and my Master's in Public Health degree from the Harvard School of Public Health in 1980. I trained in pediatrics, then cardiology, at Boston Children’s Hospital. I joined the faculty of the Department of Cardiology in 1979 as Instructor in Pediatrics and am currently the Commonwealth Professor of Pediatrics at Harvard Medical School and Associate Cardiologist-in-Chief for Academic Affairs at Boston Children’s Hospital. I have an active practice comprised of patients with congenital and acquired heart disease and have been honored by “Best Doctors in America", “Boston SuperDoctors", "Boston Magazine Best Doctor", and US News and World Report “Top Doctors,” with star designation as in top 1%. My research has focused on neurodevelopmental outcomes in children with congenital heart disease after heart surgery, and also on the evaluation and therapy of Kawasaki disease. I have received the 2007 Distinguished Scientist Award (Clinical) of the American College of Cardiology, the 2009 Meritorious Achievement Award of the CVDY Council, and the 2009 Clinical Research Prize from the American Heart Association. I am an author of over 300 original manuscripts, chapters, and reviews, including 11 guidelines or statements from professional societies.