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.
- Centers & Specialties
- Clinical Interests
- Mitral Valve repair
- Aortic surgery
- Thoracic and thoracoabdominal aorta
- Arterial coronary bypass grafting
- Pulmonary thromboendarterectomy
- Cardiac (heart) surgery
- Medical Education
- MD, Johns Hopkins University School of Medicine
- Residency, Massachusetts General Hospital|Residency, Washington University School of Medicine St. Louis
- Fellowship, Harefield Hospital|Fellowship, National Cancer Institute
- Board Certifications
- Thoracic and Cardiac Surgery - General
- Boston: Massachusetts General Hospital
- Insurances Accepted
- Aetna Health Inc.
- AllWays Health (NHP) - ACD
- AllWays Health (NHP) - PBO
- 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
- BMC HealthNet Mass Health MCO/ACO
- Cigna (PAL #'s)
- Commonwealth Care Alliance
- 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
- Medicare - ACD
- OSW - Maine
- OSW - New Hampshire
- OSW - New York
- OSW - Rhode Island
- OSW - Vermont
- Private Health Care Systems (PHCS)
- Railroad Medicare
- Railroad Medicare - ACD
- Senior Whole Health
- Tufts Health Plan
- United Healthcare (non-HMO) - ACD
- United Healthcare (non-HMO) - PBO
- Well Sense Pediatrics
Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.
- Patient Age Group
- Provider Gender
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.
- 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.
45 doctors from Massachusetts General Hospital’s Department of Surgery included in Boston magazine's 2019 Top Doctors list.
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A Mass General team finds ECMO allows for more aggressive interventions to increase survival of high-risk pulmonary embolism patients.
In October 2016 the Cardiology Division at Mass General celebrated 100 years of heart care. This video highlights the story of its founder Paul Dudley White.
Massachusetts General Hospital Division of Cardiac Surgery Receives the Society of Thoracic Surgeons' Top Rating
Mass General is among the 1.4% of hospitals in the country that achieved an overall 3-star rating for all three STS categories.
New guidelines recommend mitral valve repair for asymptomatic patients with mitral valve regurgitation, allowing for comparable outcomes with faster recovery.
“See something, say something” was one of the many takeaways from an address by Thor Sundt, MD, chief of Cardiac Surgery, during Patient Safety Awareness Week at the MGH from March 13-19.
Almost 200 MGH staffers, patients and family members joined over 10,000 walkers on the Charles River Esplanade on Sept. 12 to participate in the 2015 AHA Boston Heart Walk.
12 cardiac patients with MGH Cardiac Surgery clinicians from the extracorporeal membrane oxygenation program came together for a reunion at the Paul S. Russell, MD Museum of Medical History and Innovation.
Massachusetts General Hospital offers specialized operation to remove chronic blood clots from pulmonary arteries
Massachusetts General Hospital offers pulmonary thromboendarterectomy (PTE), a highly specialized operation to remove chronic blood clots in the lungs. Without surgery, patients who have this life-threatening disease will likely develop progressive shortness of breath so severe that it leads to heart failure.
To introduce the Institute of Heart, Vascular and Stroke Care to the MGH community, “Health Information Day” will be held Sept. 12 from 7 am to 8 pm under the Bulfinch Tents.
The Mass General Institute for Heart, Vascular, and Stroke Care integrates services to accelerate advances in stroke-related atrial fibrillation research and patient care.
The Division of Cardiac Surgery at Mass General welcomes new chief. Thoralf M. Sundt III, MD, bridges legacy of surgical practice and passion for new ideas to improve upon the patient experience.
MGH Hotline 02.04.11 THORALF M. SUNDT III, MD, has been named chief of the Division of Cardiac Surgery.
Dolly's Story: Getting Back on Her Feet
Dolly Lakkis—a business owner, optician and competitive dancer—didn’t have time to be sick. When mitral valve disease started to affect the quality of her life, she turned to a team of specialists at the Corrigan Minehan Heart Center at Massachusetts General Hospital. Dolly’s doctors were able to repair her damaged heart valve with minimally invasive surgery that got her back on her feet—and back on the dance floor—as quickly as possible.
Mass General Chief of Cardiac Surgery Discusses Choice Among Valve Prostheses
Thor Sundt, MD, chief of cardiac surgery and director of the Corrigan Minehan Heart Center, talks about heart valve options for patients undergoing heart valve surgery.
55 Fruit Street
Boston, MA 02114-2696
Phone 1: 617-643-9745
Phone 2: 617-724-0800