Jason G Barrera, MD, PhD

Jason G Barrera, MD, PhD

Not currently accepting new patients

4.91831 average rating from 142 patient reviews

Specialties

Affiliation

Mass General Brigham

Provider Locations

  • Boston, MA

Education & Training

  • Residency: Massachusetts General Hospital, Internal Medicine, 2014
  • Medical Education: University of Cincinnati College of Medicine, 2011

Board Certifications

  • Internal Medicine, American Board of Internal Medicine

Languages Spoken

  • English

Age Group Treated

  • Adults

Patient Feedback

4.91831 average rating from 142 reviews

  • Dr. Barrera is a good Doctor. Under his care for many years.

    2026-07-08

  • Nurse [redacted] has ALWAYS been a champion provider responding and following up to my calls and questions. This was the first time I saw Dr. Jason B. He too took great care and time reviewing med history and talking with me about best next steps.

    2026-07-07

  • Dr. Barrera has been my doctor for many years, I think for eight to ten years. He's always pleasant. He knows his stuff. He's very, very accurate. He listens to me and he cares. And that's what I love about him. Because I'm elderly, he doesn't pass me off as just somebody that, you know, doesn't know anything or I'm a hypochondriac. No, he's very, very caring, very concerned. He always tests me. He always makes sure that we get to the root cause of everything and that I'm feeling up to par up to where I'm supposed to be. And yeah, that's why I wouldn't go anywhere else. I'll always be as long as I'm alive, hopefully.

    2026-07-01

  • Great practice!

    2026-06-22

  • I so appreciate the staff, nurses and Dr Barerra. He always allies a generous amount time and is very thorough. I never feel rushed. He is smart and kind. I'm very happy with all the care I get from his office

    2026-06-20

  • Jason took his time, explained everything, listened to what I had to say, also left it open-ended if I ever wanted to get back to him. He was very helpful. Thank you.

    2026-06-18

  • I am a long term patient with Dr Barrera, and I value our relationship very much. He's on top of everything! He's an excellent doctor!

    2026-06-08

  • Dr. Barrera is by far the finest clinician I have ever had the privilege of working with. He is extraordinarily competent, kind, a great listener, a very strong communicator. He gives me the time I need. His practice is remarkably on time. You very rarely wait. He is absolutely the finest clinician I have ever had the opportunity to work with, and I am so blessed to be able to have him as my GP.

    2026-06-05

  • I have confidence in Jason Barrera and the decisions we make together.

    2026-06-03

  • Dr. Barrera is a very thorough, understanding and compassionate physician.

    2026-06-04

  • Dr. Barrera always listens and explains about my medications and things I can do to help my diabetes. He is a very sincere and caring doctor. I feel lucky to have him as my primary care doctor.

    2026-05-27

  • Dr. Barrera is a model of the ideal primary care physician. I don't know how he does it, but do it he does with intelligence, inquisitiveness, and listening. I could not be luckier to have him as my doc.

    2026-05-25

  • Dr. Jason is a competent professional who cares about its patience and gets involved in their care Jason is always there for me, and is always compassionate caring and wanting to help I could not be more pleased or happy to have him as my primary care physician

    2026-05-21

  • He was very thorough and thoughtful and really cared about how I was treated.

    2026-05-20

  • Dr. Jason Barrera is a fantastic primary care MD. I have been his patient for several years now and he has always shown tremendous respect for towards me and listened to my health concerns. I would recommend Dr. Barrera to anyone who would to like to benefit from his professional and compassionate care.

    2026-05-12

  • Dr. Barrera is a good PC he listens to you and talks about the issues that you r having [redacted]

    2026-05-12

  • Jason is a true professional in terms of knowledge, dedication to medical practice and standards as well as care. My only issue is that he, like the majority of his fellow medical practitioners, are focused on your medical condition today: medical management versus the alternative of wellness care focused on anti-aging and preventing advanced aging or disease progression.

    2026-05-12

  • Very thorough. Always fell respected and cared for

    2026-05-05

  • Excellent physician in every way. Careful, respectful, great knowledge of me.

    2026-05-01

  • Dr. Barrera is consistently thorough and caring.. Excellent.

    2026-04-28

  • I can't say enough positive things about how great Dr. Gayson Barrera is and by extension, the Beacon Hill Primary Care MGH practice. From beginning to end, just always they listen. They respond quickly to texts and requests for medication refills or medication changes. are very thoughtful in their approach. It's a very solid teamwork and I couldn't be happier. Thank you.

    2026-04-22

  • Dr Barrera has provided me with excellent care and advice. He listens to my questions and concerns and has always helped me understand and has recommended a thoughtful approach to follow up procedures.

    2026-04-20

  • My doctor listened to all my questions and explained to me in very simple terms my answers. He also was reassuring me of all my medications and possibly new ones

    2026-04-19

  • Patient, Direct, knowledgeable, and exceedingly helpful.

    2026-04-13

  • I am fortunate to be in the care of Dr. Barrera and his team. They are most attentive, respectful, empathetic, and professional. I consistently feel confident and trust that I am receiving the best medical care possible .

    2026-04-09

  • [redacted] Dr. Barrera, as usual, was thorough and explained things.

    2026-03-30

  • Dr. Barrera and staff are excellent.

    2026-03-28

  • My experience was very positive and I would highly recommend Dr. Barrera.

    2026-03-26

  • I have always had a great experience with Dr. Barrera.

    2026-03-26

  • I thought my provider was excellent. He explained everything to me and I was very happy.

    2026-03-25

  • Dr. Barrera is a wonderful primary care doctor. He is thoughtful, friendly, kind, and very, very easy to talk to. He seems to manage to keep in mind my pretty complex medical history and treatment experiences, and he takes these into account very well in making a treatment plan for my care. I cannot recommend him highly enough. He is a superb doctor.

    2026-03-04

  • Dr. Barrera seemed very present. Asked great questions. Listened to information I reported, setting up immediate tests that led to relevant results. Dr. Barrera was then sure to call me with immediate results and next steps. Having met him for the first time, I think he was very responsive and provided great care having known little about my medical history.

    2026-02-25

  • [redacted] He is a good listener and I feel respected and appropriately attended to.

    2026-02-23

  • I am very satisfied with Dr Barrera

    2026-02-18

  • Dr Barrera is great. He's very knowledgeable and attentive to my needs. Highly recommended.

    2026-02-05

  • Excellent

    2026-01-31

  • Excellent provider who takes the time listen to my concerns and is excellent in facilitating shared decision making

    2026-01-27

  • Nice practice

    2026-01-24

  • Excellent clinician! Listens and discusses issues with known and thought. A+

    2026-01-21

  • This care provider is prompt in delivering reminder through Patient Gate Way, courteous and kind...

    2025-12-26

  • Dr. Barrera makes me feel comfortable and informed about most of my decisions with my medical treatment. He seems to be very caring and I feel like he's a friend that's advising me.

    2025-12-24

  • I've had Dr. Barrera for about 9 years as my PCP. He's caring, sincere and honest. He listens to my concerns and allows me to be myself without forcing me to take a medication I am not comfortable with. I like changing my diet to help with blood pressure and cholesterol issues. He is knowledgeable and he never makes me feel stupid, even though I am elderly. I'm not surprised that he received a promotion because he is dedicated to what he does.

    2025-12-16

  • What can I say except that Dr Barrera is the best! I cannot think of enough adjectives to describe him. I'll try: caring , thoughtful, thorough, kind, knowledgeable, etc! So fortunate to have him as my primary doctor!!

    2025-12-15

  • The best

    2025-12-14

  • Dr Barrera is excellent excellent listener up to date on med record and results always examines the patient up to date on recent med data Excellent-- I am a retired physician and I know

    2025-12-08

  • I feel comfortable with my care

    2025-12-07

  • I feel fortunate to be a patient of Dr. Barrera.

    2025-12-01

  • Dr Jason Barrera is always taken great care of me and my wife. Knows our family and understands our health and needs. Thank you for his service and support. Best regards, [redacted]

    2025-11-19

  • Hi, this is [redacted]. I just want to say that my doctor, Jason Barrera, is the best doctor. We got along very well, were very open with one another. And he's the best. I can only say good things about him. Thank you very much. Thanks, doctor.

    2025-11-19

  • Dr. Barrera is very thorough and spends time and offers all his insights. He is fantastic.

    2025-11-12

  • Very efficient

    2025-11-02

  • Very thoughtful and thorough review of my health issues for my first visit with new primary care physician. Appreciated his prior review of my chart and the ability to focus in on the issues that were important medically and to me.

    2025-11-06

  • Dr. jason Barrera is my primary doctor and has been for several years now. He is aware of my medical history and has reached out to go over my test results. he has also referred me to other doctors when I could not get a appointment always able to reach him when I need prescriptions refilled

    2025-10-29

  • Dr. Barrera is an outstanding physician, caring, intelligent, a great follow through. Mass General, so lucky and blessed to have him.

    2025-10-22

  • Dr Barrera and staff were excellent

    2025-10-17

  • The doctor was very helpful and I would definitely recommend him and I will continue going to him myself. Thank you. Highly recommend.

    2025-10-16

  • This was the first time meeting Dr. Barrera [redacted] Dr. Barrera was completely considerate of my physical concerns. [redacted]

    2025-10-08

  • Dr.Barrera is the best doctor I met during my lifetime ( I am 72 years old). He is a doctor who listens to me, analyzes my complaints and makes thoughtful decisions. He really cares about my wellbeing.

    2025-10-05

  • I have spent about 2 1/2 hours during this visit, either waiting for the doctor or for a nurse to administer two vaccines!

    2025-10-05

  • very capable in keeping me alive

    2025-09-26

  • My experience with the office and with nurses was excellent.

    2025-08-29

  • Great experience. Did not feel rushed to get through the appointment

    2025-08-26

  • Dr. Barrera is very knowledgeable physician

    2025-08-20

  • Dr Barrera is excellent. Been seeing him forma while and he is always great.

    2025-08-19

Accepted Insurance

  • Wellpoint
  • Beech Street
  • Coventry
  • United Health Care
  • Mass General Brigham Health Plan
  • Maine Community Health Options
  • TriCare
  • MassHealth
  • Humana
  • Medicaid ME
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield Medicare
  • Medicare
  • Aetna
  • Medicaid RI
  • WellSense
  • Commonwealth Care Alliance
  • Multiplan
  • Cigna
  • Fallon Health
  • Harvard Pilgrim Health Care
  • MassHealth ACO
  • Tufts Health Plan
  • Medicaid VT