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Gregory D Lewis

Gregory D Lewis, MD

Heart Failure and Transplantation Cardiology

Highlights

Age Groups Seen

  • Adults
  • Geriatrics

Languages

  • English

Gender

Male

About Gregory D Lewis

Since arriving at MGH in 1999 I have had the privilege of training in internal medicine and cardiology, teaching as a chief resident and as a cardiology attending, providing clinical care to patients with a broad range of cardiovascular diseases, and conducting research. I current serve as Section Head of Heart Failure, Medical Director of the Heart Transplant Program, and Director of the Cardiopulmonary Exercise Testing Laboratory.

As an investigator at MGH I have published over 100 manuscripts in fields ranging from the evaluation of novel therapies for heart failure to mechanisms of exercise intolerance in cardiovascular disease and metabolic response patterns to exercise. I am particularly interested in the role of the lung circulation and other extra-cardiac organs in mediating exercise intolerance in patients with heart failure. Through metabolic profiling of human plasma at rest and during exercise, in collaboration with the Broad Institute, our group has established metabolic signatures of cardiovascular disease states that may help to refine current phenotyping approaches.

Our cardiopulmonary exercise laboratory focuses on clinical evaluation of patients with shortness of breath of unclear etiology through comprehensive evaluations of each organ system's contribution to reduced functional capacity. Our laboratory also focuses on risk stratification in heart failure patients and serial assessments of exercise performance before and after medical interventions.

As Medical Director of the MGH Heart Transplant Program it has been an honor to work in close collaboration with my medical and surgical colleagues and the Transplant Center to help bring innovative approaches to heart transplantation with a particular focus on organ pool expansion.

Locations

  1. Massachusetts General Heart Failure and Transplantation Program at the Corrigan Minehan Heart Center
    • 32 Fruit Street, Yawkey Building, 5th Floor, Suite 5B, Boston, MA 02114
    • Get Directions

Expertise

Education

  • Fellowship: Massachusetts General Hospital, Cardiology, 2007
  • Residency: Massachusetts General Hospital, Medicine, 2002
  • Medical Education: University of Rochester, School of Medicine and Dentistry, 1999

Board Certifications

  • Advanced Heart Failure and Transplant Cardiology: American Board of Internal Medicine, 2020

Insurance

This provider may accept more insurance plans than shown. Please call the practice to find out if your plan is accepted.
Search plans
  • Aetna
  • Beech Street
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield - Indemnity
  • Blue Cross Blue Shield Medicare
  • Cigna
  • Commonwealth Care Alliance
  • Coventry
  • Fallon Health
  • Harvard Pilgrim Health Care
  • Humana
  • Maine Community Health Options
  • Mass General Brigham Health Plan
  • MassHealth
  • Medicaid CT
  • Medicaid ME
  • Medicaid NH
  • Medicaid RI
  • Medicaid VT
  • Medicare
  • Medicare ACO
  • Multiplan
  • Railroad Medicare
  • Senior Whole Health
  • TriCare
  • Tufts Health Plan
  • Tufts Medicare Preferred
  • United Health Care
  • Wellpoint
  • WellSense
  • WellSense NH

Ratings & Reviews

4.9 out of 5

115 ratings, 56 reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

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  • Reviewed on 1/21/2026

    The care and experience were exceptionally great.

  • Reviewed on 1/19/2026

    Gregory Lewis provides a thorough examination, explains illnesses well, is a very good listener, and a wonderful physician. His care is outstanding.

  • Reviewed on 1/19/2026

    Dr. Lewis is very professional, very intelligent, well-spoken, and he takes the time to explain things to you properly and answer your questions. So it's a pleasure to go up there and have him be part of my healthcare.

  • Reviewed on 1/18/2026

    very concerned about patients and always explains everything in easy to understand terms

  • Reviewed on 1/9/2026

    He is world class.

  • Reviewed on 12/31/2025

    Dr. Lewis and Nurse Practitioner [redacted] are excellent. Would highly recommend!

  • Reviewed on 12/31/2025

    Dr Lewis,fortunately for me, has been my cardiologist for 10 years. He is always courteous and professional and thorough- I feel lucky to have him take care of me.

  • Reviewed on 12/29/2025

    Dr Lewis and his team are deeply committed to seeking the best outcome possible. As a patient, one feels the beneficiary of decades of research and study. Grateful for his care.

  • Reviewed on 12/22/2025

    Dr. Lewis is the best ever. Thank you very much.

  • Reviewed on 12/11/2025

    I've been in Dr. Lewis's care for, I believe, five years. He is a fantastic doctor and the staff that he surrounds himself with from the front desk to the nurses to the other physicians have all been excellent. He takes time, tells me, walks me through how he's thinking, takes my feedback, asks very insightful questions. Couldn't ask for more.

  • Reviewed on 12/8/2025

    At check in people were very polite PA's in Dr Lewis's office were terrific-

  • Reviewed on 12/4/2025

    I have the utmost respect for Dr. Lewis. I believe he saved my life in [redacted] when I needed a heart transplant. Dr. Lewis recognized how damaged my heart was at the time and took time to meet with me outside of regular clinic hours. He is an incredible cardiologist and he is always able to answer any questions my wife and I have. My wife and I are very fond of Dr. Lewis and we look forward to seeing him on my six month visits. We feel very comfortable with Dr. Lewis and his team in the continuance of my care.

  • Reviewed on 11/24/2025

    Very disappointing/disheartening appt. Most of the appt. was spent with the Fellow who was good but still learning. Dr. Lewis came in late and left early before the appt. was over. I had thought long and hard about a few questions to ask him but didn't have the chance. There were questions the Fellow needed to ask him, but there wasn't time for that either. I felt Dr. Lewis had already formed his opinion about me before he stepped into the room and gave the distinct impression that he wasn't interested in having me as his patient.

  • Reviewed on 11/23/2025

    Dr. Lewis and his fellow were great

  • Reviewed on 11/22/2025

    Great

  • Reviewed on 11/10/2025

    An unusual and welcome session with very good information

  • Reviewed on 11/10/2025

    I'm an older gentleman, [redacted] years old, and I got to tell you, everything about the appointment was perfect. Yes, they respected my privacy. They also helped me, and they did whatever they were supposed to do, and I couldn't be more satisfied. And I thank them for it.

  • Reviewed on 11/7/2025

    very thorough and professional and a wonderful experience

  • Reviewed on 11/1/2025

    I appreciate Dr. Lewis 'candor and thoughtful explanation of my condition and what treatment is and isn't possible.

  • Reviewed on 11/1/2025

    Everything went smoothly relating to my visit

  • Reviewed on 10/27/2025

    The care provided was excellent. I have no complaints and nothing to offer for improvements. Everything was excellent.

  • Reviewed on 10/26/2025

    My cardiologist is my doctor at MGH

  • Reviewed on 10/13/2025

    very courteous and respectful, answering all my questions and concerns

  • Reviewed on 10/12/2025

    The transplant team at MGH is always one step ahead of my health. There passion for what they do makes me feel comfortable and safe. I have yet to have a bad experience.

  • Reviewed on 10/12/2025

    In one word excellent

  • Reviewed on 9/20/2025

    Dr Lewis is always very caring and informative. He has a great way about him that calms you right down. He listens carefully and explains everything so you are informed and comfortable with what he's saying. He never rushes you and you always leave feeling heard. He is the best!

  • Reviewed on 9/1/2025

    Dr Lewis was awesome, and I cannot say enough good things.

  • Reviewed on 8/24/2025

    I first saw Dr Lewis who was very thorough then I saw Dr Greg Lewis who I think is wonderful!!!

  • Reviewed on 8/18/2025

    Yes. Anyone at the heart center there is pleasant. They work with you. They talk to you. They answer questions. They're friendly. It's organized. The doctors and all are professional, are professional the way they handle themselves. It is a great unit.

  • Reviewed on 8/11/2025

    I like the way they treat me. It's the hospital I've always preferred for my illness. And I'm happy to bring my doctors to the hospital. I recommend them to everyone.

  • Reviewed on 8/10/2025

    Very thorough and extremely knowledgeable

  • Reviewed on 8/8/2025

    Great experience and so appreciative for his care and attention

  • Reviewed on 8/7/2025

    Dr Lewis is knowledgeable about my condition. He took the time to review my file in depth. I enjoyed talking with him

  • Reviewed on 8/3/2025

    Dr. Lewis is amazing, kind and compassionate.

  • Reviewed on 7/27/2025

    Dr Lewis is vey scientifically oriented, basing his patient evaluation, recommendations and follow-up on research supported reasoning. This gives me great confidence that I'm getting the best possible care.

  • Reviewed on 7/25/2025

    very informative and professional

  • Reviewed on 7/19/2025

    Dr. Lewis are always very well prepared and courteous. They make me part of the conversation and involved. Outstanding care.

  • Reviewed on 7/19/2025

    Absolutely the BEST !!!!

  • Reviewed on 7/19/2025

    Great team- I am very pleased

  • Reviewed on 7/16/2025

    I have many choices, but I choose to go to Boston Mass General cause I wanted the best. He is definitely the best.

  • Reviewed on 7/9/2025

    Dr. Lewis gave very detailed answers to our questions, and my wife and I feel privileged that he is my caregiver.

  • Reviewed on 7/7/2025

    Dr Lewis is the best for f/u on HFpEF and Amyloidosis.

  • Reviewed on 6/29/2025

    Dr.Lewis was great.

  • Reviewed on 6/24/2025

    The best

  • Reviewed on 6/16/2025

    Very satisfied

  • Reviewed on 6/14/2025

    My team at MGH is phenomenal. They pay attention to the little details - and also keep an eye on the big picture. The excellence with which they approach my care, and their job, is really admirable. They have no down days.

  • Reviewed on 6/14/2025

    Dr. Greg Lewis and his team are top rate. I thank God I found them!

  • Reviewed on 6/8/2025

    Been seeing Dr. Lewis for 15 years. Very thorough, professional and prompt. His clerk Damaris is also extremely nice, professional, and very accommodating.

  • Reviewed on 6/5/2025

    Dr. Lewis is amazing. He is so incredibly smart and kind. He listens, thinks and then responds. He is the BEST.

  • Reviewed on 5/24/2025

    I appreciate Dr. Lewis and his team taking great care of me. The listen and hear me too.

  • Reviewed on 5/19/2025

    I was seen in a timely fashion by Dr. Lewis. He was very thorough, examination was extremely complete. He was attentive to my medications, complaints and needs and sympathetic in many ways. It's a great joy to see a provider with that ability.

  • Reviewed on 5/11/2025

    Yeah, I got... this is [redacted] Dr. Lewis's patient. As always spent the time with me, is very thoughtful. Helpful. Asked me all the important questions was open to any sort of. Comment suggestions that I had, had a wonderful experience as usual. Thank you.

  • Reviewed on 5/1/2025

    I have been seeing him for quite sometime and I had helped me manage my condition very well. He is very caring , I always feel calm at every visit I have had with him. # 1 cardiologist in my books.

  • Reviewed on 4/21/2025

    Dr Lewis spent time acquiring all relevant information related to my condition. I was impressed with all aspects of the care Dr Lewis provides to his patients.

  • Reviewed on 4/21/2025

    Dr. Lewis has always provided me with the utmost care. He's a very competent person and respectful and I would recommend him to anybody.

  • Reviewed on 4/17/2025

    It was refreshing to see that my records at Cape Cod Healthcare were available and had been reviewed.