Dr. Singer is Professor of Medicine at Harvard Medical School and Professor in the Department of Epidemiology at Harvard School of Public Health. At Massachusetts General Hospital, he is Director of the General Medicine Research Fellowship. Dr. Singer is widely recognized for his research contributions in clinical epidemiology and preventive medicine, in particular, the prevention of stroke in atrial fibrillation. He received the 2003 John Eisenberg Award from the National Society for General Internal Medicine for Career Achievements in Research, and the 2008 C. Miller Fisher Award from the New England chapter of the American Stroke Association/American Heart Association for his contributions to stroke research.