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Joonun Choi

Joonun Choi, MD

Editor, The Pulse, the physicians' quarterly newsletter for Stamford Hospital's Heart & Vascular Institute, Director of Cardiology Resident Medical Education, Stamford Hospital, Medical Director, Stamford Cardiac Testing Center at Mill River, Stamford Hospital Ethics Committee, and Stamford Hospital Graduate Medical Education Committee (GME) and Internal Medicine GME Committee


Member of: Stamford Health Medical Group

About Me

Dr. Choi joined The Heart Physicians, now Stamford Health Medical Group, in 2008.

Dr. Choi is the Director of Resident Cardiology Education. He is the physician champion for congestive heart failure and has helped Stamford Hospital achieve the Gold Award for heart failure in the AHA Get with the Guidelines Program. He serves as Chairman of the Bioethics Committee and is editor of The Pulse, the physicians’ quarterly newsletter of the Stamford Health Heart & Vascular Institute.

He lives in Greenwich with his wife and two children.


English, Korean, and Spanish


  • Cardiovascular Disease


Medical School

New York Medical College


St. Vincent's Medical Center


Columbia University Medical Center
St. Vincent's Medical Center

Board Certifications

  • Cardiovascular Disease - American Board of Internal Medicine
  • Internal Medicine - American Board of Internal Medicine


  • President of the American Heart Association Fairfield County Board
  • Associate Professor of Clinical Medicine Columbia University College of Physicians & Surgeons
  • Chair, Stamford Hospital Bioethics Committee
  • Physician Champion for Heart Failure at Stamford Hospital
  • Editor, The Pulse, the physicians’ quarterly newsletter for Stamford Health's Heart & Vascular Institute
  • Stamford Hospital Graduate Medical Education (GME) and Internal Medicine GME Committees
  • Top Doc for Castle Connolly (2013, 2014, 2015) in Fairfield County and the New York Metro area
  • Director of Resident Cardiac Education
  • Physician of the Quarter
  • Teacher of the Year

Academic Appointment

Associate Professor of Clinical Medicine Columbia University College of Physicians & Surgeons

If you are in need of emergency care, call 911.

The majority of the physicians on the Stamford Hospital Medical Staff are not employees or agents of the Hospital. They are independent practitioners who have been granted the privilege of using the Hospital's facilities for the care and treatment of their patients. This includes, but is not limited to, emergency department physicians, anesthesiologists, radiologists, surgeons, cardiologists, obstetricians, pathologists and other consultants who may treat patients.

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