
Highlights
Age Groups Seen
- Adults
- Geriatrics
Languages
- Korean
- English
Gender
FemaleAbout Hanna K Gaggin
Dr. Gaggin is a cardiologist, clinical investigator and educator at Massachusetts General Hospital and Harvard Medical School.
Dr. Gaggin provides wide-ranging, general cardiac care as well as heart failure- and amyloidosis-focused care. She established the multi-disciplinary Amyloidosis Clinic at Massachusetts General Hospital and serves as a member of the Cardiovascular Medicine Section Leadership Council in the Cardiology Division.
She leads and participates in single and multi-center clinical trials on heart failure with a focus on heart failure with preserved ejection fraction and cardiac amyloidosis. She utilizes both traditional and novel research methods including machine learning and biomarkers.
Her educational efforts have focused on peer and trainee education. She is the Subspecialty Core Educator for the Internal Medicine residency at Massachusetts General Hospital and the co-editor of the 1st and 2nd edition of the MGH Cardiology Board Review book. In 2022, Dr. Gaggin was selected for the American College of Cardiology’s Emerging Faculty Leadership Academy.
Dr. Gaggin graduated from the Eastern Virginia Medical School in 2003, followed by Internal Medicine residency at the University of Virginia Health System, MPH at Harvard School of Public Health with a concentration in Quantitative Methods in 2007, clinical cardiology fellowship at the University of Pittsburgh Medical Center and clinical research fellowship at Massachusetts General Hospital. She joined the faculty at Massachusetts General Hospital and Harvard Medical School in 2012. In 2022, Dr. Gaggin was selected as one of the HeartShare inaugural fellows to focus on data sciences.
Locations
- Massachusetts General Noninvasive Cardiology Clinic at the Corrigan Minehan Heart Center
- 32 Fruit Street, Yawkey Building, 5th Floor, Suite 5B, Boston, MA 02114
- Get Directions
- phone: 617-724-6750
- fax: 617-724-6767
Expertise
Education
- Fellowship: Massachusetts General Hospital, Cardiology, 2012
- Fellowship: Massachusetts General Hospital, Research Fellowship, 2012
- Fellowship: University of Pittsburgh Medical Center, Cardiovascular Disease, 2010
- Residency: University of Virginia Health System, Internal Medicine, 2006
- Medical Education: Eastern Virginia School of Medicine, 2003
Board Certifications
- Cardiovascular Disease: American Board of Internal Medicine, 2010
Insurance
- 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
5 out of 5
112 ratings, 54 reviewsThe 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.
- Reviewed on 2/5/2026
Dr. Gaggin is very professional and knowledgeable, thorough in her evaluation, and I'm lucky to have her as my cardiologist.
- Reviewed on 1/29/2026
Outstanding
- Reviewed on 1/18/2026
Dr. Gaggin and staff provided excellent care. I received a great deal of information and support that will enable me to manage my condition going forward. It.
- Reviewed on 1/15/2026
I found her very professional. She informed me completely of my condition. She's a very, very good doctor.
- Reviewed on 1/15/2026
My experience with Dr. Hanna Gaggin cannot be any better. She is a magnificent doctor. I couldn't be happier and I'm just blessed that she is my doctor.
- Reviewed on 1/11/2026
She was kind and thoughtful and very thorough. She treated me like we are in a partnership regarding my health.
- Reviewed on 12/25/2025
Dr. Gaggin is very knowledgeable about the procedure that I had and absolutely easy to talk to about my concerns, like helping me to calibrate my personal blood pressure at home device, my walking regimen and goals and checking my walking times and related blood pressure readings taken at time intervals after walking. She encourages me to continue my training program and when asked suggests activities that will help me in addition to walking and my water aerobics exercises. It is so nice to have someone as knowledgeable and caring as Dr. Gaggin.
- Reviewed on 12/24/2025
Best possible total experience.
- Reviewed on 12/12/2025
excellent doctor in every way.
- Reviewed on 12/8/2025
They are all professional and kind to me.
- Reviewed on 11/26/2025
It was a wonderful experience Dr. Gaggin is very knowledgeable comforting and concerned about my heart issue I look forward to my next appointment with her.
- Reviewed on 11/26/2025
Dr. Gaggin's approach to my medical needs was well thought out and reflected her listening attentively to my situation. This was an excellent first visit.
- Reviewed on 11/27/2025
The doctor was very professional. I guess I would recommend her to anyone that asked me. Thank you.
- Reviewed on 11/18/2025
Very good experience
- Reviewed on 11/17/2025
The Provider explained to me the problems I am having with my heart.
- Reviewed on 11/12/2025
Dr. Gaggin is professional and thorough. Her friendly and caring approach made me feel I was in very capable hands.
- Reviewed on 11/12/2025
Dr. Gaggin and Team were terrific in every aspect of my visit--Caring, informative, encouraging--All I could hope for--I'm not sure if I saw a nurse or not--I feel fortunate to have Dr. Gaggin as my provider--
- Reviewed on 10/26/2025
Dr was very comforting and caring asking questions to amplify clarity in relationship
- Reviewed on 10/22/2025
Very thorough and professional
- Reviewed on 10/20/2025
Very professional, competent, and caring.
- Reviewed on 10/20/2025
Superior care provider service
- Reviewed on 10/19/2025
I am very happy to see my provider, because she take care of my health Very good.
- Reviewed on 10/19/2025
She's excellent.
- Reviewed on 10/18/2025
Professional, Knowledgeable and Patient Centric.
- Reviewed on 10/10/2025
Hi, Dr. Gaggin was amazing. She told me a lot of important information. She knows my case in, out, backwards and sideways. We talked about other medical issues. She gave me some advice, good advice. And yeah, just a really great visit. She really knows what she's doing. She's ordered a bunch of tests. It's all good.
- Reviewed on 10/8/2025
Excellent visit.
- Reviewed on 9/30/2025
I feel save and secure with this hole team
- Reviewed on 9/5/2025
Yeah, hi, this is [redacted]. Dr. Gaggin is as good as you can get. She knows what she's talking about. She does it well. She seems to care for her patient. And I would certainly recommend her to anybody who is in need of cardiac involvement. Thank you.
- Reviewed on 8/25/2025
I felt extremely comfortable with Dr. Gaggin she explained everything quite thoroughly did not rush and spent all the time necessary just being our first visit with her.
- Reviewed on 8/25/2025
Dr. Gaggin is an excellent listener and is very reassuring. I always feel comfortable at my appointment.
- Reviewed on 8/24/2025
Great
- Reviewed on 8/14/2025
Excellent provider
- Reviewed on 8/8/2025
I'm extremely satisfied with all the support and the attention that I've gotten from Dr. Gaggin and all the staff at Mass General. I truly appreciate them getting to my case soon so that they can help me recover or at least get somewhat better from my condition. Thank you.
- Reviewed on 8/4/2025
I like Dr Gaggin very much. Very knowledgeable about my condition. Very good listener.
- Reviewed on 8/4/2025
Extremely professional,knowledgeable and available when necessary
- Reviewed on 8/1/2025
Dr. Hannah was extremely wonderful and listened to my issues and spent most of the time talking to me and explaining everything that I did not know before. And she is following up with me with some exercise program and I will definitely keep her as she is one of my favorites. Thank you and I hope to see her again soon. She spent a lot of time with me explaining Many things that I did not understand. The nurses were also very good. Thank you.
- Reviewed on 7/30/2025
Very friendly & knowledgeable
- Reviewed on 7/17/2025
My experiences with Dr. [redacted] and Dr. Gaggin have been nothing short of remarkable. The care, the attention, and the confidence that I have in both of them, that I am in the best hands possible, it's just a great feeling to have. And the both of them together have helped me greatly as far as my outlook going forward. certainly in the right place.
- Reviewed on 7/9/2025
Dr. Gaggin was very knowledgeable, very personable, listened as well as explained her side. Anyway, I'm totally pleased to have her as a doctor.
- Reviewed on 7/7/2025
The best. Always had a good visit with her
- Reviewed on 7/7/2025
Dr Gaggin is thorough, patient and very knowledgable about my condition. Her advice is understandable and realistic. [redacted]
- Reviewed on 6/25/2025
dr gaggin was great- 10&&&&&&&&&&&&&&&!!
- Reviewed on 6/24/2025
The doctor was attentive and highly qualified.
- Reviewed on 6/19/2025
I couldn't ask for a better cardiologist than Dr. Gaggin. She is brilliant and stays on top of the latest research and procedures. She is personal, caring and a joy to have as a doctor.
- Reviewed on 6/17/2025
She was very pleasant and informative. Knows her business very well.
- Reviewed on 6/12/2025
very satisfied with all areas during this appointment
- Reviewed on 6/11/2025
Dr. Gaggin explains issues in a way the layman can understand. She is very patient,
- Reviewed on 6/11/2025
My freedoms were not violated. We had a common sense conversation about my well being. Everything was delivered with respect and care.
- Reviewed on 6/6/2025
Dr. Gaggin was great. Saw me for my appointment even after being 1.5 hours late due to traffic.
- Reviewed on 6/6/2025
The provider is always very prepared and knowledgeable about my tests and my file and my history, is very attentive, and listens very well, and responds with answers that I understand, and gives me time to ask follow-up questions, and then before the session is ended, another opportunity to ask questions. I never feel rushed. She's a great provider.
- Reviewed on 5/26/2025
The provider was very helpful in seeing me. I was about [redacted] minutes late [redacted]. Thank you Doctor for seeing me anyway.
- Reviewed on 5/26/2025
Imbeccable credentials. Caring and compassionate beyond measure.
- Reviewed on 4/23/2025
Dr Gaggin is an extremely caring and helpful provider. Her follow up is awesome. We have had some terrible news and she was there the whole time to make sure that we were directed to the proper specialist.
- Reviewed on 4/1/2025
She was extremely competent and helpful