
Highlights
Age Groups Seen
- Adults
- Geriatrics
Languages
- Italian
- English
Gender
MaleAbout James Louis Januzzi
Dr. Jim Januzzi has been a member of the Massachusetts General Hospital Cardiology Division since 2000. He is the Hutter Family Professor of Medicine at Harvard Medical School and is on faculty at the Harvard Clinical Research Institute.
Dr. Januzzi graduated first in his class from New York Medical College in 1994, and subsequently did a residency in Internal Medicine at the Brigham and Women's Hospital, followed by a cardiology and echocardiography fellowship at Massachusetts General Hospital. Since joining the staff at MGH, Dr. Januzzi is an active clinician, with a focus on heart failure and chronic coronary artery disease. He is an active teacher, and has a busy research program, with a specific focus on cardiac biomarker testing. He has published more than 600 manuscripts, and has edited 5 textbooks. He speaks widely on the topic of biomarker testing in heart disease and treatment of heart failure. He has served as the Cardiology Consultant to the Boston Red Sox since 2005. He is a Trustee of the American College of Cardiology, and an editor at two top cardiology journals.
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, 2000
- Residency: Brigham and Women's Hospital, Medicine, 1997
- Internship: Brigham and Women's Hospital, Medicine, 1995
- Medical Education: New York Medical College, 1994
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 NY
- Medicaid RI
- Medicaid VT
- Medicare
- 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
155 ratings, 94 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 1/31/2026
An excellent cardiologist who is not only highly knowledgeable but also genuinely kind. Dr. Januzzi listens carefully, and explains things that easy to understand, and truly cares about his patients.
- Reviewed on 1/18/2026
Dr. Januzzi's outstanding he always listens provide provides informative information and is generally concerned about the health and welfare of myself. It's always a pleasure talking to him.
- Reviewed on 1/18/2026
Dr. Januzzi is an outstanding provider. He always has an outstanding grasp of all health issues, is very practical, explains issues in an easily-understandable manner, and is extremely professional. I could not be happier with the care he provides.
- Reviewed on 1/17/2026
Dr. Januzzi is incredible, knowledgeable, patient etc
- Reviewed on 1/17/2026
very good experience with this care provider.
- Reviewed on 1/11/2026
Dr. Januzzi has been my doctor for 20 years. He is intelligent, very familiar with me and a friend in addition. He never rushes the appointment. He explains what issues that I need to pay attention to and he also always looking ahead in terms of what things I should keep in mind with respect to my age and health. He is excellent.
- Reviewed on 1/10/2026
The provider, Dr Januzzi, is an excellent and knowledgeable physician!! He always has time for questions and detailed explanations of my medical conditions. He knows my history and knows when there is even a slight change in any testing. He makes suggestions to improve my medical conditions and always tells me to contact him if anything changes. I leave very satisfied and blessed to have him.
- Reviewed on 12/27/2025
Dr. Januzzi is a wonderful cardiologist and I feel lucky to have him as my doctor. He answers all my questions.
- Reviewed on 12/23/2025
He I s excellent.
- Reviewed on 12/20/2025
Dr. Januzzi's office runs with precision and respect for the patients. It is a pleasure and the way healthcare should work.
- Reviewed on 12/15/2025
I've been with Dr. Januzzi for decades and I think he's absolutely terrific. That's all I have to say.
- Reviewed on 12/12/2025
The nurse or technician took my vitals including ekg...so i wasn't there to hear any conversation as they were not in the room together I value and trust my doctor !
- Reviewed on 12/12/2025
Wonderful physician. Can't say enough positive things about him! We are fortunate to be in his care!
- Reviewed on 12/11/2025
Dr. Januzzi always provides excellent care.
- Reviewed on 12/11/2025
Dr Januzzi is my longtime cardiologist. He has seen me thru some very serious heart problems. I would not be enjoying my 29 grand and great grand kids without his superb medical interventions. [redacted]
- Reviewed on 12/11/2025
I was very pleased with the professionalism and courtesy of everyone in the office.
- Reviewed on 12/11/2025
I had a very good experience with my provider. He listened to my concerns and have a plan on going forward. I would highly recommend Dr, Januzzi.
- Reviewed on 12/8/2025
This is a great staff of people working together for my needs.
- Reviewed on 12/8/2025
Dr Januzzi is extremely professional, respectful, caring and an excellent physician who goes out of his way to ensure that my condition is being treated properly. I wouldn't want anyone else as a cardiologist.
- Reviewed on 12/7/2025
I've been going to Dr Januzzi for over 20 years. He has been very helpful all of that time.
- Reviewed on 12/7/2025
Dr Jim is is one of if not the best doctors I have ever seen. Brilliant, humble, relatable, on time, a nice person. It's very unusual to see these traits all in one person. [redacted] Terrific person
- Reviewed on 12/1/2025
Experience was outstanding with Dr. James Januzzi. It is comfort to me to be in his care. My experience was a 10.
- Reviewed on 11/30/2025
Dr . Januzzi is a superb physician.
- Reviewed on 11/29/2025
Cardiology office well staffed w trained, knowledgeable staff - clinical and admin, who do a good job.
- Reviewed on 11/29/2025
Everyone was pleasant and helpful. Dr Januzzi was great ! It was a very good appointment
- Reviewed on 11/23/2025
Dr Januzzi is the smartest cardiologist in his specialty area in the US, and is on the forefront of research. Importantly, he is also extremely down to earth, warm, and easy to talk to. He did not make me feel like he was rushing, and spent extra time analyzing the etiology of my issues and listening to my thoughts and opinions. He explained his rationale for medication's and he recommended next steps in very understandable language. I entered the appointment nervous and skeptical about medication I was taking, and I left feeling comfortable and 100% confident in the plan he recommended. I feel so fortunate to have him guiding my cardiac care!!
- Reviewed on 11/22/2025
Dr Januzzi is exceptional, knowledgeable, professional and caring. One of the best MD's I have ever worked with
- Reviewed on 11/22/2025
Dr Januzzi is the most kind, so caring , and thoughtful . He is a dedicated Dr who truly cares about this patients . I am so blessed to have him , taking care of me . I have told so many people about how bright Dr Januzzi .
- Reviewed on 11/21/2025
Dr. Januzzi is the best: kind, warm and always available for questions.
- Reviewed on 11/21/2025
Dr. Jim is # 1. I'm grateful to be in his competent care.
- Reviewed on 11/20/2025
Outstanding explains things in layman's terms/ makes patient feel relaxed
- Reviewed on 11/19/2025
He was very good and explained me everything about my heart
- Reviewed on 11/10/2025
Dr. Januzzi was incredibly knowledgable, patient and clear. I was so grateful that he was willing to take the time to answer my questions and explain things in a way that was very easy for me, a layperson, to understand.
- Reviewed on 11/12/2025
Dr. Januzzi has been my cardiologist for the past 15-20 years and I've always been treated very well with him. Thank you.
- Reviewed on 11/11/2025
Very informative and helpful
- Reviewed on 11/8/2025
Dr Januzzi is the best very respectable and explains everything perfect
- Reviewed on 11/8/2025
Dr. Januzzi is absolutely the best cardiologist in Boston. He's thorough, he's compassionate, and he's an expert. I'm lucky to have him.
- Reviewed on 10/31/2025
The doctor is very compassionate and cares deeply about his patients.
- Reviewed on 11/4/2025
I appreciate all the help you give me, concerning my healthcare.
- Reviewed on 10/26/2025
JIM Januzzi is the epitome of an excellent care provider. Over the years he has listened to me, answered my questions, and expressed compassion for my healthcare needs.
- Reviewed on 10/26/2025
Dr. Januzzi was so knowledgeable about my lengthy past cardiac history coming in. He was caring, an excellent listener, and carefully provided me with next steps and recommendations moving forward. I'm for sure in great hands with he as my new Cardiologist.
- Reviewed on 10/11/2025
He is the best
- Reviewed on 10/11/2025
He is the best provider I could imagine
- Reviewed on 10/10/2025
It was a routine yearly check upl.
- Reviewed on 10/10/2025
Excellent Care
- Reviewed on 10/6/2025
Dr Januzzi reads my chart noting all incidents which happened since my last visit. He comes to the exam room well prepared! His knowledge covers more than "cardiology "! I am fortunate to be his patient!
- Reviewed on 10/6/2025
Both my Physicians whom I saw have been treating me for 23 and 10 years respectively. They are thorough, considerate, understand my home circumstances and evaluate my health and care professionally. I am very fortunate to have such a high level of quality care.
- Reviewed on 9/18/2025
Excellent provider
- Reviewed on 9/15/2025
Dr. Januzzi has been my cardiologist since day one. Not only do I respect him, I like him very much as an individual. The nurse's nursing staff is very good and I was very happy with everything. Thank you.
- Reviewed on 9/15/2025
Dr. Januzzi is one of the best cardiologists in the country, if not the world. He is the most responsive, most respectable, most professional person I have ever met. In all of my situations that I needed assistance or needed to talk to someone, Dr. Januzzi was always there to answer my questions. Whether he was in Italy, San Francisco, or Boston, he always returned my phone call. That's what I call 10 plus. Thank you.
- Reviewed on 9/13/2025
Outstanding Physician and investigator, great clinician. I am very fortunate that he is my cardiologist.
- Reviewed on 9/13/2025
Jim is one of the best drs I know I trust his knowledge 100%
- Reviewed on 8/31/2025
I have undoubtedly the best care in all regards by Dr Januzzi and his team. I am treated with kindness, respect and have always felt validated and heard!
- Reviewed on 8/31/2025
I felt very comfortable with the appointment. More importantly I am confident in Dr Januzzi and the healthcare provided between test, medications, explanations and follow up. Thank you,
- Reviewed on 8/24/2025
Dr. Januzzi is always a great listener, compassionate and thorough when giving instruction or explaining medical issues. He is always responsive and has excellent support staff working with him.
- Reviewed on 8/23/2025
Dr Januzzi is one of world known scientists and cardiologists at MGB
- Reviewed on 8/23/2025
Knows me. Very patient, knowledgeable and caring
- Reviewed on 8/26/2025
Dr. Januzzi has been my cardiologist since 2001, and has always been thorough in his care and communication regarding my heart health.
- Reviewed on 8/18/2025
Great Physician and staff
- Reviewed on 8/16/2025
Outstanding
- Reviewed on 8/16/2025
Dr. Januzzi was knowledgeable, patient, answered all my questions, professional, and understanding towards my concerns! I would highly recommend, and am grateful to have him as my cardiologist!
- Reviewed on 8/16/2025
Check in and check out personnel need to be more attentive to patients instead of shooting the breeze with a co- worker or on a cell phone ignoring the waiting patient.
- Reviewed on 8/11/2025
An exceptional visit and doctor
- Reviewed on 8/11/2025
Absolutely excellent
- Reviewed on 8/10/2025
I think Dr Januzzi is most thoughtful and through in looking out for my cardiac health. Scheduling timely and necessary tests when needed. Always treats me with respect and genuine concern in keeping me on a healthy path. I am most grateful for his service.
- Reviewed on 8/10/2025
Dr Januzzi is outstanding. He is patient, respectful, and an excellent communicator
- Reviewed on 8/10/2025
Dr. Januzzi is clearly a superlative practitioner.
- Reviewed on 8/9/2025
Very good
- Reviewed on 8/2/2025
I have a nearly 20 year relationship with Dr. Januzzi and Mass General. Have been successfully through a variety of experiences and procedures. I have no objectivity, I have received only the most trustworthy and exceptional care,
- Reviewed on 8/2/2025
Excellent manner; impressively familiar with my past medical history; instills great confidence; professional and quite likeable.
- Reviewed on 7/27/2025
I've been seeing Dr. Januzzi for many years and he's always been respectful and professional. He's the best and kindest Dr. I've ever had.
- Reviewed on 7/27/2025
Excellent doc and person.
- Reviewed on 7/26/2025
I consider myself very fortunate to have Dr. Januzzi as my cardiologist. He is the best!
- Reviewed on 7/26/2025
I know I am getting the best care possible
- Reviewed on 7/9/2025
My visit was on time, and provided ample time to discuss my current health condition. We talked about performing future testing to help identify any potential health concerns.
- Reviewed on 7/8/2025
Great as always
- Reviewed on 7/5/2025
I have been seeing Dr Januzzi for going on 20 years now and I trust him completely.
- Reviewed on 7/5/2025
Simply the best and most caring person you could hope for.
- Reviewed on 7/5/2025
Dr. Januzzi is a terrific doctor in every way, He's a great listener, very professional, knowledgeable and personable. I feel very lucky to have him as my cardiologist. [redacted]
- Reviewed on 7/5/2025
He's the best!
- Reviewed on 6/23/2025
Dr is one of the best doctors I've ever had one of the few times where you have somebody who's technically incredibly proficient and a bedside manner that is just as good.
- Reviewed on 6/22/2025
Wonderful
- Reviewed on 6/22/2025
Great doctor! Spends ample time with me, listens carefully, and explains things in easy-to-understand language.
- Reviewed on 6/22/2025
Dr. James Januzzi is an outstanding cardiologist who provides superb care to his patients. He is simply the very best at what he does. He is a credit to the practice of medicine and the MGH. Medical care does not get any better. To be able to be treated by and a patient of a physician of such caliber is very special!
- Reviewed on 6/16/2025
Dr. Januzzi is very courteous and is very professional and very thorough in his dealings with me as a patient. And as a result, I have complete confidence in his judgment and in what he directs me to do.
- Reviewed on 6/16/2025
He is the "very best."
- Reviewed on 6/14/2025
He is Caring, Knowledgeable, and likable
- Reviewed on 6/13/2025
I was prescribed a GLP1 which required prior approval. The prior approval team submitted weight loss as the diagnosis. which not covered by medicare. I am told by Medicare part D that given my medical issues there are other diagnosis for which the med can be covered. So the prior approval team did not list these conditions. I am now waiting for an appeal decision or Medicare.
- Reviewed on 6/8/2025
Dr Januzzi has always been professional , yet warm and caring.
- Reviewed on 6/7/2025
It was an excellent experience.
- Reviewed on 6/7/2025
Dr Januzzi is the best of the best how do you beat that?
- Reviewed on 6/7/2025
I had open heart surgery and received a St Jude's aortic heart valve 20 years ago and I have been a patient of Dr. Januzzi since then. He is an outstanding physician and an outstanding person. He has always been accessible and available to me. I feel very fortunate to be his patient! Thank you, Jim!
- Reviewed on 5/7/2025
This team is amazing.
- Reviewed on 5/3/2025
It is always a pleasure to meet with Dr. Januzzi for my annual check up. He spends the necessary time to answer my question and provides great feedback.