As chief of Cardiac Surgery, Dr. Sundt performs the full range of adult cardiac surgical procedures. He is also dedicated to assuring the highest quality care by the entire cardiac surgical team in a patient-centered, efficient, and safe manner.


Cardiac Surgery


Centers & Specialties

Heart Center

Transplant Center

Clinical Interests
  • Mitral Valve repair
  • Aortic surgery
  • Thoracic and thoracoabdominal aorta
  • Arterial coronary bypass grafting
  • Pulmonary thromboendarterectomy
  • Pericardiectomy
  • Cardiac (heart) surgery
Medical Education
  • MD, Johns Hopkins University School of Medicine
  • Residency, Massachusetts General Hospital|Residency, Washington University School of Medicine
  • Fellowship, Harefield Hospital|Fellowship, National Cancer Institute
Board Certifications
  • Thoracic and Cardiac Surgery - General
  • Boston: Massachusetts General Hospital
Insurances Accepted
  • Aetna Health Inc.
  • Beech Street
  • Blue Cross Blue Shield - Blue Care 65
  • Blue Cross Blue Shield - Indemnity
  • Blue Cross Blue Shield - Managed Care
  • Blue Cross Blue Shield - Partners Plus
  • Centene/Celticare
  • Cigna (PAL #'s)
  • Fallon Community HealthCare
  • Great-West Healthcare (formally One Health Plan)
  • Harvard Pilgrim Health Plan - ACD
  • Harvard Pilgrim Health Plan - PBO
  • Health Care Value Management (HCVM)
  • Humana/Choice Care PPO
  • Medicaid
  • Medicare
  • Medicare - ACD
  • Neighborhood Health Plan - ACD
  • Neighborhood Health Plan - PBO
  • OSW - Maine
  • OSW - New Hampshire
  • OSW - Rhode Island
  • OSW - Vermont
  • Private Health Care Systems (PHCS)
  • Railroad Medicare
  • Railroad Medicare - ACD
  • Senior Whole Health
  • TriCare
  • Tufts Health Plan
  • Unicare
  • United Healthcare (non-HMO) - ACD
  • United Healthcare (non-HMO) - PBO
Patient Age Group

Edit Profile


Thor Sundt, MD, is the Churchill Professor of Surgery, chief of the Division of Cardiac Surgery and director of the Corrigan Minehan Heart Center.

Dr. Sundt's clinical focus has been on surgery for the correction of acquired cardiovascular conditions in adults. He is an internationally recognized thought-leader on thoracic aortic aneurysms and other aortic diseases, having written and lectured extensively on the subject. He is also widely recognized as an expert in reparative procedures for vascular heart conditions, including mitral regurgitation and aortic valve regurgitation. He has also contributed to the literature on the optimal use of arterial conduits to improve the long term durability of coronary bypass procedures.

His research interests have ranged from organ transplantation to the genetics and genomics of bicuspid aortic valve disease. He has received funding by the National Institutes of Health, the American Association for Thoracic Surgery and The Mayo Foundation for this work. Most recently, he collaborated with investigators in the disciplines of human factors and systems engineering to improve the safety and efficiency of healthcare delivery. On a national level, he was the first chair of the Workforce on Patient Safety for the Society of Thoracic Surgeons. He is actively collaborating with members of the Mass General Physician Organization in the development of tools to enhance patient centered and shared decision making.

He has served in numerous executive roles, including surgical director for cardiac transplantation at Washington University in St. Louis, surgical director of the Thoracic Aortic and Marfan Clinic at the Mayo Clinic and vice-chair of the Department of Surgery at the Mayo Clinic in Rochester. Dr. Sundt is a member of numerous medical and surgical societies and is the Vice President of the American Association for Thoracic Surgery, the most prestigious academic cardiothoracic surgical organization in the world.

Edit Profile

Research & Publications

Research Summary

The focus of my research has been on the genetics and clinical aspects of aneurysmal disease associated with bicuspid aortic valve.  In addition my research team has explored fundamental aspects of medical error with a particular emphasis on Human Factors and communication.


View my most recent publications at PubMed

Edit Profile

News & Events



Cardiac Surgery
55 Fruit Street
Boston MA, 02114-2696
Phone: 617-643-9745617-724-0800
Fax: 617-726-5804

Edit Profile