Photo of George  Tolis, MD

George Tolis, MD

  • Cardiac surgeon
  • Assistant Professor of Surgery, Harvard Medical School


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Dr. Tolis has a special interest in complex high risk cardiac surgery, including valve, coronary bypass, thoracic aortic procedures including acute dissections, surgery for endocarditis, as well as all types of cardiac re-operations. He also specializes in liberal use of in situ bilateral IMA grafts in coronary bypass grafting and surgery on high risk patients who have been rejected for trans-catheter aortic valve replacement.
He is a concert pianist and an amateur woodworker. 


Cardiac Surgery


Centers & Specialties

Heart Center

Clinical Interests
  • Bilateral Internal Mammary Artery CABG
  • Aortic Arch Surgery
  • Aortic Root Surgery
  • Aortic dissection
  • Mitral Valve repair
  • Cardiac (heart) surgery
Medical Education
  • MD, Harvard Medical School
  • Residency, Massachusetts General Hospital
  • Fellowship, Mount Sinai Hospital Medical Center|Fellowship, Yale-New Haven Hospital
Board Certifications
  • Surgery
  • Thoracic Surgery (Cardiothoracic Vascular Surgery)
Foreign Languages
  • French
  • Greek
  • 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
  • Maine Community Health Options (MCHO)
  • MassHealth
  • Medicare
  • Medicare - ACD
  • OSW - Connecticut
  • OSW - Maine
  • OSW - New Hampshire
  • OSW - Rhode Island
  • 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
  • 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


George Tolis, MD, was born in Chicago, Illinois. He graduated from Yale University summa cum laude with a bachelor's and a master's degree in molecular biophysics and biochemistry. Following graduation from Harvard Medical School in 1995, he completed an internship and residency in general surgery at Massachusetts General Hospital and a fellowship in cardiothoracic surgery at Yale-New Haven Hospital.  Dr. Tolis then completed an advanced aortic fellowship at Mount Sinai Hospital in New York City.

Dr. Tolis worked at Lenox Hill Hospital in New York City as chief of aortic surgery and at St Elizabeth's Medical Center as chief of the Division of Cardiothoracic Surgery. He joined the cardiac surgery staff at Mass General in July 2014.

Research & Publications

Research Summary

Dr. Tolis has published and presented nationally and internationally on liberal utilization of bilateral internal mammary arteries, aortic root and arch surgery and outcomes of high risk cardiac reoperations.  He also has a special interest in resident surgical teaching and education.

News & Events


Cardiac Surgery
55 Fruit Street
Boston, MA 02114-2696
Phone: 617-643-9280
Fax: 617-726-5804

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