Jag Singh is a Professor of Medicine at Harvard Medical School. He is the former Clinical Director of the Cardiology Division and the Roman W. DeSanctis Endowed Chair in Cardiology at Mass General Hospital. Dr. Singh has over 400 peer reviewed publications. He has served as an International Associate editor for the European Heart Journal and the former Deputy Editor of the Journal of American College of Cardiology: Clinical EP. Dr. Singh's is the national & global principal investigator on 6 ongoing multi-center clinical trials. Jag is a member of the Board of Trustees of the Heart Rhythm Society.