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Peter J Carolan

Peter J Carolan, MD

Gastroenterology

Mass General Brigham

Highlights

Age Groups Seen

  • Adults
  • Geriatrics

Languages

  • English

Gender

Male

Locations

  1. Massachusetts General Gastroenterology Associates
  2. Massachusetts General Gastroenterology Clinic
    • 52 Second Avenue, Blue Building, Suite 3100, Waltham, MA 02451
    • Get Directions

Expertise

Education

  • Fellowship: Massachusetts General Hospital, Gastroenterology, 2011
  • Residency: Massachusetts General Hospital, Internal Medicine, 2006
  • Internship: Massachusetts General Hospital, Internal Medicine, 2005
  • Medical Education: Columbia University College of Physicians & Surgeons, 2004

Board Certifications

  • Internal Medicine: American Board of Internal Medicine, 2010

Insurance

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 ME
  • 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

87 ratings, 42 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.

Search reviews
  • Reviewed on 5/4/2026

    He was listening and suggested an alternative approach to iron absorption which we will address next visit in fall.

  • Reviewed on 5/4/2026

    I have been with Dr Carolan for several years now. He knows my health history and the long ongoing medications taken to control my colitis. The conf call worked very well as a means of a yearly check in and discussion

  • Reviewed on 4/29/2026

    He was great

  • Reviewed on 4/19/2026

    very professional

  • Reviewed on 4/19/2026

    Everything was great

  • Reviewed on 4/17/2026

    Always attentive to patient's issues

  • Reviewed on 4/8/2026

    Dr Carolan is so througho he doesn't miss a thing about me

  • Reviewed on 4/8/2026

    Dr. Carolan , is great and has a good bedside manner and is extremely knowledgeable.

  • Reviewed on 4/10/2026

    Kind and patient - and extremely thorough! Very grateful.

  • Reviewed on 3/29/2026

    Dr. Carolan has been my doctor for a number of years. He is always well prepared for my visit. I have a number of ongoing GI issues, which we are addressing. I appreciate his warm, caring personality. I feel we are working together to get me to a better place with my GI issues.

  • Reviewed on 3/22/2026

    Dr. Carolan was perfect! Kind and considerate and explained procedures proposed in an easy manner.

  • Reviewed on 3/18/2026

    Dr Carolan is brilliant and takes exceptionally thorough care of my issues, suggesting new and helpful innovations.

  • Reviewed on 3/18/2026

    Finally met a doctor who may fix my chronic GI issues.

  • Reviewed on 3/11/2026

    Dr is a good listener and answered all questions. Very timely on appointments.

  • Reviewed on 3/4/2026

    It's a wonderful phone call.

  • Reviewed on 3/1/2026

    Dr Carolan changed my life simply by listening to me. He hears me and we discuss treatment together. I thank God for him everyday!!!

  • Reviewed on 3/1/2026

    He was a good dr

  • Reviewed on 2/17/2026

    The provider was very knowledgeable and discussed my concerns with great care. I appreciate Dr Carolan spending extra time to answer my questions. I feel that I have been listened to and treated as a patient, rather than a number. [redacted]

  • Reviewed on 2/4/2026

    Dr. Carolan was knowledgeable, friendly, respectful, kind. Very much enjoyed my visit with him and I'm glad I selected him.

  • Reviewed on 1/25/2026

    Dr. Carolan has been great to work with. Treats patients like people, friendly, respectful and honest, easy to talk to, listens and offers honest advice and perspectives, direct but not judgemental. Very pleased with his care. (If this sounds like a bot.. it's not. I'm a sales & service manager and write reviews for my employees twice a year on the quality of their client care.)

  • Reviewed on 11/28/2025

    This doctor is really, he's just absolutely excellent. I feel so comfortable and he takes so much time and just really has a nuanced approach. So extremely grateful that I'm seeing him for my care.

  • Reviewed on 11/23/2025

    Dr Carolan is top notch. He's smart, friendly, engaging, and professional. He listens, he explains, he's respectful... everything you want in a medical professional.

  • Reviewed on 11/19/2025

    Dr. Carolan was very thorough, very professional, gave me plenty of time to ask questions to clarify the procedure that I'm going to be going through. I was more than happy with him.

  • Reviewed on 11/17/2025

    Dr. Carolan exceeded all expectation

  • Reviewed on 11/10/2025

    Quite knowledgeable

  • Reviewed on 11/8/2025

    Love the doc

  • Reviewed on 11/5/2025

    The doctor and staff were fantastic.

  • Reviewed on 11/3/2025

    great listener and good advice and review of bloodwork very efficiently.Made good suggetions .

  • Reviewed on 10/29/2025

    Very good. Very good.

  • Reviewed on 10/26/2025

    Caring, Knowledgeable, Sincere

  • Reviewed on 10/18/2025

    Fantastic experience; thank you so much!!

  • Reviewed on 10/1/2025

    As usual, very knowledgeable and professional

  • Reviewed on 10/1/2025

    Kind and efficient

  • Reviewed on 9/28/2025

    Dr. Carolan was fantastic. In a perfect world, every doctor would be like Dr. Carolan.

  • Reviewed on 9/26/2025

    I was very pleased with Dr. Carolan, but I'm displeased with how long this questionnaire is taking. It's getting very frustrating. Just about anything I do, I have to go through afterwards. Actually, I don't have to go through it. I'm doing it because I like Dr. Carolan, but this is very annoying how long this questionnaire is. Thank you very much.

  • Reviewed on 9/25/2025

    I trust Dr. Carollan completely with my care. He is kind, attentive to my needs and cares about my whole health, not just his area of expertise. The entire staff and experience were very positive.

  • Reviewed on 9/24/2025

    Dr. Carolan is an excellent doctor. He's thorough, patient, and he allowed me to get an appointment as soon as possible for my urgent issue.

  • Reviewed on 9/17/2025

    I am delighted to be seeing Dr. Carolan and be able to have his leadership with my health issues.

  • Reviewed on 9/12/2025

    Dr. Carolan was very accommodating, very professional, very personal, and gave me all the information I needed and answered all my questions.

  • Reviewed on 9/6/2025

    Very personable and forthcoming.

  • Reviewed on 9/4/2025

    I was very comfortable with Dr. Carolan who was very thorough and accommodating to my requests. He was able to schedule tests quickly and just as quickly reported on the test results.

  • Reviewed on 7/28/2025

    Excellent and very good informative