Dr. Jagmeet Singh, MD DPhil

Dr. Jagmeet (Jag) P. Singh, MD, DPhil, is a cardiac electrophysiologist at Massachusetts General Hospital in Boston. Electrophysiologists treat heart rhythm problems, often with devices such as pacemakers and defibrillators. His office address is listed at 55 Fruit Street, Boston, MA (https://www.healthcare4ppl.com/physician/massachusetts/boston/jagmeet-p-singh-1962487447.html).

He did his internal medicine residency and his cardiology and cardiac electrophysiology fellowships at Mass General, and is board certified in clinical cardiac electrophysiology by the American Board of Internal Medicine (2004) and in cardiovascular disease (https://doctors.massgeneralbrigham.org/provider/jagmeet-p-singh/255739). He is a Professor of Medicine at Harvard Medical School and founded the Resynchronization and Advanced Cardiac Therapeutics Program at the MGH Heart Center. He served as Clinical Director of the MGH Cardiology Division and held the Roman W. DeSanctis Endowed Chair in Cardiology from 2015 to 2020 (https://doctors.massgeneralbrigham.org/provider/jagmeet-p-singh/255739).

Beyond patient care, he is a researcher and author. He has written for Mayo Clinic Press and posts publicly on X and LinkedIn about cardiology, research and technology, including artificial intelligence (https://x.com/jagsinghmd). He has said he completed a master's in clinical investigation and an executive program in artificial intelligence at MIT while serving as clinical director (https://pmc.ncbi.nlm.nih.gov/articles/PMC11417477/).

Federal Open Payments data for 2021-2025 shows he received about $496,057 across 369 records from medical companies, with the largest amounts from Sanofi-Aventis, Boston Scientific, Abbott, Medtronic and Impulse Dynamics. Payments from industry to doctors are common and legal, and often reflect research, consulting or speaking work. Patients can ask a doctor directly about these relationships.