Ik-Kyung Jang, MD, PhD
Not currently accepting new patients
4.847619 average rating from 189 patient reviews
Specialties
Affiliation
Mass General Brigham
Provider Locations
- Boston, MA
Dr. Jang came to Massachusetts General Hospital in 1987 from Leuven University in Belgium, where he has completed his residency in medicine and fellowship in cardiology. He also successfully defended his doctorate thesis at the same university. After his advanced fellowship in cardiology at MGH, he joined the staff and is currently working as a Physician and an interventional cardiologist in the Cardiology Division. He holds currently an academic title of Professor of Medicine at Harvard Medical School.
A recipient of the Mass General Brigham in Excellence Award for Research in 2000 and for leadership in 2006, his research roster is extensive, and is focused on acute coronary syndromes including acute myocardial infarction. His earlier research focused on pharmacology and physiology of thrombosis and thrombolysis. In 1994 he extended his interests to clinical studies. Since founding the Coronary Clinical Trial Group within the Cardiac Unit in 1995, he has conducted numerous clinical studies. He also led Clinical Research Office of the Cardiology Division between 2003 and 2006. He is currently the Director of the Cardiology Laboratory for Integrative Physiology and Imaging (CLIPI).
For the last eleven years he has pioneered the application of intravascular Optical Coherence Tomography (OCT) to patients to better characterize vulnerable plaque and to understand the mechanisms of plaque rupture. Dr. Jang has been invited to lectures at numerous national and international meetings. His publications number more than 200.
Education & Training
- Fellowship: Massachusetts General Hospital, Cardiology, 1992
- Fellowship: University Hospital Belgium, Cardiology, 1985
- Residency: University Hospital Belgium, Medicine, 1983
- Medical Education: KyungHee University, 1980
Board Certifications
- Internal Medicine, American Board of Internal Medicine
- Cardiovascular Disease, American Board of Internal Medicine
Languages Spoken
- Korean
- English
Age Group Treated
- Adults
Patient Feedback
4.847619 average rating from 189 reviews
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Dr. Jang is an excellent cardiologist. I feel very fortunate to have him as my care provider.
2026-08-06
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The best doctor experience I've ever had.
2026-08-04
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Dr. Jang has been my cardiologist for 11 years. I think he is wonderful in every way. I trust his advice completely. I consider myself lucky to have him as my care provider.
2026-07-29
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I had a very good experience with Dr. Jang. He seemed to be very knowledgeable and his knowledge seemed to be quite impressive.
2026-07-30
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Very impressed with Dr Jang. He was professional yet personable, asked excellent questions then actually listened to my answers, and offered a thorough and easily understandable explanation of my situation as well as a helpful plan for next steps. I continue to be impressed with the level of care offered at Mass General!
2026-07-27
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The doctor is knowledgeable, articulate ,personable & professional
2026-07-26
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Highly professional and thorough.
2026-07-16
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Wonderful doctor
2026-07-16
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Doctor Jang is a true professional and I have been his patient for over 30 years and he is certainly the best doctor I have ever met
2026-07-09
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Excellent care
2026-07-02
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I trust Dr. Jang with my care.
2026-06-26
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Very professional kind and informative
2026-06-26
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Here it is a few days after my visit, and I'm sort of perplexed 1 with myself that i did not ask more questions re: my care and possible surgical testing, and 2, with Dr. Jang for his brevity in discussing his recommendations and overall condition relevant to my heart condition. Since 2008 have seen him and things relatively stable. Now at age [redacted], with some treatment probably coming, would expect more explanations from the provider ie risks, other option etc
2026-06-08
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Dr. IK Jang is a first class cardiologist and I am honored to be his patient. A very caring doctor.
2026-06-03
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Dr Jang is very professional
2026-05-28
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I am very grateful that I have Dr Jang as my Cardiologist. He is very professional, knowledgeable and kind.
2026-05-26
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Doctor was very attentive. Quickly established a rapport with me. Very knowledgeable, explained the biology of my issue. Answered my questions.
2026-06-04
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My cardiologist i K Jang is the best
2026-05-24
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Easy to talk to, easy to understand.
2026-05-22
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Dr. Jang is very compassionate, personable and professional. He is a "no nonsense" doctor and cares about his patients.
2026-05-18
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Excellent
2026-05-13
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Extremely knowledgeable about his profession which I sincerely appreciate . He took the time to critically listen to me which I also appreciated.
2026-05-13
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Excellent
2026-05-12
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He is knowledgeable and has my best interest at heart
2026-05-12
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I feel I could not be in better hands.
2026-05-11
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Quick, timely visit.
2026-04-29
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It amazes me that such a large medical facility can perform to such a higher level than the smaller close to home facility; keep doing what you're doing. I don't mind traveling to Boston when the service is so exceptional! Thank you
2026-04-27
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its nice and Im happy
2026-04-06
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Dr Jang is very knowledgeable, thorough, kind and caring. He was patient throughout the visit, listened carefully to everything I shared, and created a thoughtful and effective plan.
2026-04-02
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Provided the knowledge and feedback regarding my situation. Spent the time to clearly understand my situation ant to provide guidance and recommendations
2026-04-01
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I have much confidence in Dr. Jang's knowledge and care
2026-03-31
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MGh overall has always been professional & courteous.
2026-03-30
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The best
2026-03-25
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Dr Jang has always been very thorough and cooperative answer answering questions
2026-03-20
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I thanked Dr Jang & his staff for keeping me alive for the last (10) years & the great care I have received from true professionals.
2026-03-19
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Dr Jang is the best!
2026-03-18
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Dr. Jang is very thorough and always answers whatever questions I have.
2026-03-16
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Dr. Jang is excellent as always. I cannot think of a thing for my experience to have been improved.
2026-03-11
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My Doctor is excellent and spent more time with me than I normally see with my GP
2026-03-09
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An excellent provider and a very good experience. Would highly recommend this provider to anyone with cardio concerns....
2026-03-09
-
The care provider was very courteous and everything was on time and I would only say good things about the people. The issue that I have isn't really so much that, it's that I really didn't get the answers that I was looking for in terms of my current situation and how I can improve on my current situation from where I am today. That was unclear to me coming into the meeting and it was still unclear to me coming out of the meeting. And maybe that's just the way it has to be. Thanks.
2026-02-26
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Excellent care
2026-02-24
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This doctor came in the room without a greeting or introduction. At first, I didn't realize that he was the actual cardiologist because of the way he came barging in straight to the computer without a word. The doctor never even made eye contact. He rushed through the visit the entire time. After he ordered some testing, he told me to follow up with my previous cardiologist. Awful bedside manner overall.
2026-02-23
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I have great confidence in Dr. Jang...very knowledgeable and and terrific communicator of the information during my visits.
2026-02-19
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Great experience!
2026-02-17
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Dr Jang is very thorough, professional, and kind.
2026-02-26
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I am in excellent hands with Dr. Jang.
2026-02-25
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Always able to help understand what my visit results were.
2026-02-04
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DR Jang is the best doctor I have ever had!!!!!
2026-01-30
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Yeah, he's very prompt, he's nice, knows what he's talking about. Glad to have him.
2026-01-29
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Dr. Jang was excellent: knowledgeable and caring.
2026-01-26
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Dr. Jang was wonderful. He's knowledgeable, articulate, and definitely knew what I was there for and answered all my questions.
2026-01-23
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Dr. Jang has been my cardiologist for the last 25 years and he has always been very respectful, very caring, and a great cardiologist.
2026-01-23
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Dr. Jang, was the very first cardiologist at MGH. I was always very impressed with his input and recommendations. He put in my first stent, and he always instilled confidence in me.
2026-01-21
-
I transferred my care after a change in insurance and needed someone with expertise of my chronic condition. I was matched with this provider and felt he had a wonderful bedside manner. He listened intently, asked thoughtful questions and offered good advice when we talked about my concerns. We made a plan together that put me at ease. I could tell that he cares deeply about his patients and am grateful that I have a provider like him managing my care.
2026-01-15
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He was great and took time to answer my questions.
2025-12-01
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Best cardiologist.
2025-11-28
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Very professional very knowledgeable and informative
2025-11-24
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Dr. IK-Kyung, MD, PhD saved my life, and I will be ever Grateful for that.
2025-11-19
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Dr Jang is excellent - caring and truly interested in my well being.
2025-11-19
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Very friendly and professional. There was no wait to see the doctor. I actually saw him earlier than my appointment
2025-11-17
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Dr Jang has always been a great care provider. He always explains everything during my visit. It is my pleasure to have him as my doctor.
2025-10-30
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I have been seeing this provider for 18 years and every encounter has been a positive experience. I cannot say enough about Dr. Jang - I would recommend him highly.
2025-10-30
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Dr. Jang is an outstanding provider
2025-10-15
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I was examined by Dr. Jang on a semi-urgent basis, and I am EXTREMELY grateful for the superb care he provided. Dr. Jang is knowledgeable, patient and kind.
2025-10-15
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I feel very fortunate to have Dr. Jang as my cardiologist, and I feel equally as lucky to live close by to such a great facility like Mass General Hospital.
2025-10-10
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I have been a patient of Dr Jang for many years. I value his input re my medical condition. He has always explained my cardiac issues and taken the time necessary to fully evaluate my issues. He is an excellent physician. [redacted]
2025-10-08
-
Dr. Jang is an excellent cardiologist. I feel very fortunate to have him as my care provider.
2026-08-06
-
The best doctor experience I've ever had.
2026-08-04
-
Dr. Jang has been my cardiologist for 11 years. I think he is wonderful in every way. I trust his advice completely. I consider myself lucky to have him as my care provider.
2026-07-29
-
I had a very good experience with Dr. Jang. He seemed to be very knowledgeable and his knowledge seemed to be quite impressive.
2026-07-30
-
Very impressed with Dr Jang. He was professional yet personable, asked excellent questions then actually listened to my answers, and offered a thorough and easily understandable explanation of my situation as well as a helpful plan for next steps. I continue to be impressed with the level of care offered at Mass General!
2026-07-27
-
The doctor is knowledgeable, articulate ,personable & professional
2026-07-26
-
Highly professional and thorough.
2026-07-16
-
Wonderful doctor
2026-07-16
-
Doctor Jang is a true professional and I have been his patient for over 30 years and he is certainly the best doctor I have ever met
2026-07-09
-
Excellent care
2026-07-02
-
I trust Dr. Jang with my care.
2026-06-26
-
Very professional kind and informative
2026-06-26
-
Here it is a few days after my visit, and I'm sort of perplexed 1 with myself that i did not ask more questions re: my care and possible surgical testing, and 2, with Dr. Jang for his brevity in discussing his recommendations and overall condition relevant to my heart condition. Since 2008 have seen him and things relatively stable. Now at age [redacted], with some treatment probably coming, would expect more explanations from the provider ie risks, other option etc
2026-06-08
-
Dr. IK Jang is a first class cardiologist and I am honored to be his patient. A very caring doctor.
2026-06-03
-
Dr Jang is very professional
2026-05-28
-
I am very grateful that I have Dr Jang as my Cardiologist. He is very professional, knowledgeable and kind.
2026-05-26
-
Doctor was very attentive. Quickly established a rapport with me. Very knowledgeable, explained the biology of my issue. Answered my questions.
2026-06-04
-
My cardiologist i K Jang is the best
2026-05-24
-
Easy to talk to, easy to understand.
2026-05-22
-
Dr. Jang is very compassionate, personable and professional. He is a "no nonsense" doctor and cares about his patients.
2026-05-18
-
Excellent
2026-05-13
-
Extremely knowledgeable about his profession which I sincerely appreciate . He took the time to critically listen to me which I also appreciated.
2026-05-13
-
Excellent
2026-05-12
-
He is knowledgeable and has my best interest at heart
2026-05-12
-
I feel I could not be in better hands.
2026-05-11
-
Quick, timely visit.
2026-04-29
-
It amazes me that such a large medical facility can perform to such a higher level than the smaller close to home facility; keep doing what you're doing. I don't mind traveling to Boston when the service is so exceptional! Thank you
2026-04-27
-
its nice and Im happy
2026-04-06
-
Dr Jang is very knowledgeable, thorough, kind and caring. He was patient throughout the visit, listened carefully to everything I shared, and created a thoughtful and effective plan.
2026-04-02
-
Provided the knowledge and feedback regarding my situation. Spent the time to clearly understand my situation ant to provide guidance and recommendations
2026-04-01
-
I have much confidence in Dr. Jang's knowledge and care
2026-03-31
-
MGh overall has always been professional & courteous.
2026-03-30
-
The best
2026-03-25
-
Dr Jang has always been very thorough and cooperative answer answering questions
2026-03-20
-
I thanked Dr Jang & his staff for keeping me alive for the last (10) years & the great care I have received from true professionals.
2026-03-19
-
Dr Jang is the best!
2026-03-18
-
Dr. Jang is very thorough and always answers whatever questions I have.
2026-03-16
-
Dr. Jang is excellent as always. I cannot think of a thing for my experience to have been improved.
2026-03-11
-
My Doctor is excellent and spent more time with me than I normally see with my GP
2026-03-09
-
An excellent provider and a very good experience. Would highly recommend this provider to anyone with cardio concerns....
2026-03-09
-
The care provider was very courteous and everything was on time and I would only say good things about the people. The issue that I have isn't really so much that, it's that I really didn't get the answers that I was looking for in terms of my current situation and how I can improve on my current situation from where I am today. That was unclear to me coming into the meeting and it was still unclear to me coming out of the meeting. And maybe that's just the way it has to be. Thanks.
2026-02-26
-
Excellent care
2026-02-24
-
This doctor came in the room without a greeting or introduction. At first, I didn't realize that he was the actual cardiologist because of the way he came barging in straight to the computer without a word. The doctor never even made eye contact. He rushed through the visit the entire time. After he ordered some testing, he told me to follow up with my previous cardiologist. Awful bedside manner overall.
2026-02-23
-
I have great confidence in Dr. Jang...very knowledgeable and and terrific communicator of the information during my visits.
2026-02-19
-
Great experience!
2026-02-17
-
Dr Jang is very thorough, professional, and kind.
2026-02-26
-
I am in excellent hands with Dr. Jang.
2026-02-25
-
Always able to help understand what my visit results were.
2026-02-04
-
DR Jang is the best doctor I have ever had!!!!!
2026-01-30
-
Yeah, he's very prompt, he's nice, knows what he's talking about. Glad to have him.
2026-01-29
-
Dr. Jang was excellent: knowledgeable and caring.
2026-01-26
-
Dr. Jang was wonderful. He's knowledgeable, articulate, and definitely knew what I was there for and answered all my questions.
2026-01-23
-
Dr. Jang has been my cardiologist for the last 25 years and he has always been very respectful, very caring, and a great cardiologist.
2026-01-23
-
Dr. Jang, was the very first cardiologist at MGH. I was always very impressed with his input and recommendations. He put in my first stent, and he always instilled confidence in me.
2026-01-21
-
I transferred my care after a change in insurance and needed someone with expertise of my chronic condition. I was matched with this provider and felt he had a wonderful bedside manner. He listened intently, asked thoughtful questions and offered good advice when we talked about my concerns. We made a plan together that put me at ease. I could tell that he cares deeply about his patients and am grateful that I have a provider like him managing my care.
2026-01-15
-
He was great and took time to answer my questions.
2025-12-01
-
Best cardiologist.
2025-11-28
-
Very professional very knowledgeable and informative
2025-11-24
-
Dr. IK-Kyung, MD, PhD saved my life, and I will be ever Grateful for that.
2025-11-19
-
Dr Jang is excellent - caring and truly interested in my well being.
2025-11-19
-
Very friendly and professional. There was no wait to see the doctor. I actually saw him earlier than my appointment
2025-11-17
-
Dr Jang has always been a great care provider. He always explains everything during my visit. It is my pleasure to have him as my doctor.
2025-10-30
-
I have been seeing this provider for 18 years and every encounter has been a positive experience. I cannot say enough about Dr. Jang - I would recommend him highly.
2025-10-30
-
Dr. Jang is an outstanding provider
2025-10-15
-
I was examined by Dr. Jang on a semi-urgent basis, and I am EXTREMELY grateful for the superb care he provided. Dr. Jang is knowledgeable, patient and kind.
2025-10-15
-
I feel very fortunate to have Dr. Jang as my cardiologist, and I feel equally as lucky to live close by to such a great facility like Mass General Hospital.
2025-10-10
-
I have been a patient of Dr Jang for many years. I value his input re my medical condition. He has always explained my cardiac issues and taken the time necessary to fully evaluate my issues. He is an excellent physician. [redacted]
2025-10-08
Accepted Insurance
- Tufts Medicare Preferred
- Wellpoint
- Coventry
- Blue Cross Blue Shield Medicare
- Multiplan
- MassHealth
- Harvard Pilgrim Health Care
- Medicare
- Medicaid CT
- Cigna
- WellSense
- Medicaid ME
- United Health Care
- Blue Cross Blue Shield - Indemnity
- Medicaid NH
- Medicaid VT
- Railroad Medicare
- Medicaid RI
- Blue Cross Blue Shield
- Medicare ACO
- Senior Whole Health
- Aetna
- TriCare
- Commonwealth Care Alliance
- WellSense NH
- Tufts Health Plan
- Mass General Brigham Health Plan
- Fallon Health
- Beech Street
- Maine Community Health Options
- Humana