Marcus E Semel, MD, MPH
Not currently accepting new patients
4.891014 average rating from 345 patient reviews
Specialties
Affiliation
Mass General Brigham
Provider Locations
- Weymouth, MA
- Westwood, MA
Dr. Semel received his medical degree from the University of Rochester School of Medicine and Dentistry. He completed both his general surgery residency and vascular and endovascular surgery fellowship at Brigham and Women’s Hospital. During his training, he was the Arthur Tracy Cabot Fellow in Surgical Health Services Research and completed a master’s in public health with a concentration in clinical effectiveness at the Harvard T.H. Chan School of Public Health. He has served as the associate program director and then program director for the Brigham and Women’s Vascular and Endovascular Surgery Fellowship. He previously served interim division chief of the Brigham and Women’s Division of Vascular and Endovascular Surgery.
Dr. Semel treats all aspects of vascular disease including aortic aneurysm, carotid disease, hemodialysis access, limb preservation, and venous disease.
Education & Training
- Fellowship: Brigham and Women's Hospital, Vascular Surgery, 2014
- Residency: Brigham and Women's Hospital, General Surgery, 2012
- Internship: Brigham and Women's Hospital, General Surgery, 2006
- Medical Education: University of Rochester School of Medicine and Dentistry, 2005
Board Certifications
- Vascular Surgery, American Board of Surgery
Languages Spoken
- Spanish
- English
Age Group Treated
- Adults
Patient Feedback
4.891014 average rating from 345 reviews
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Good
2026-07-30
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Dr Semel is fabulous .. a fine doctor and wonderful personality and bedside manner. [redacted]
2026-07-29
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I'm very happy with Dr. Semel, very grateful to have him monitoring my Iliac stent. Grateful that he is one of my care team doctors. I'm glad that my imaging is done right there and he is able to have immediate access to results. Very nice Doctor.
2026-07-29
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I like Dr Semel and all of his staff. When I leave his office I feel very comfortable knowing all the facts about my current and future situation.
2026-07-26
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Yes, Dr. Semel is a very courteous man and listens to what I have to say and he's just a nice guy and he knows what he's doing.
2026-07-17
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I was very satisfied with my visit. I was in and out in a timely fashion, but felt as though the doctor listened to me and explained to things well. There was no treatment protocol except that I needed an ultrasound. From there, we will have more decisions to make. I was impressed with how fast the ultrasound appointment people called me to schedule an appointment. I also really liked that the doctor gave me three locations to go to for the ultrasound appointment and asked what order of the locations I preferred.
2026-07-16
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Dr. Semel listened, discussed when surgery would be recommended, and for me, why it is not necessary at this time. Great communication. I would definitely recommend him for anyone looking for a vascular doctor/surgeon.
2026-07-15
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Dr. Semel cares about his patients. He is a professional and carries a confidence into every session. This puts the patient at ease and relieves any nervousness there may be on the oatients part.
2026-07-13
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Dr. Semel is kind and careing, and knows what he is doing.
2026-07-07
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Excellent doctor.I appreciate both his medical skills and his willingness to listen to any concerns.
2026-07-06
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Okay.
2026-07-03
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He was very informative in answering my questions and concerns
2026-06-30
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The appointment went well and all things related to why I was there were covered
2026-07-08
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Yes, Dr. Semel actually had read my charts before I came since I had had recent surgery and he took the time to look at the total picture.
2026-07-02
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He was thourough and did a fine job
2026-07-01
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I find Dr. Semel very, very professional, does a very, very good job, and he was very thorough. I really am very happy having him for a doctor. Thank you.
2026-06-24
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Dr. Semel and the PA, [redacted] were very helpful and explaining my issue. [redacted]
2026-06-22
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Dr. Semel is always been perfessional, kind and listened to all concerns. It is a pleasure to meet him and makes me feel good about visit.
2026-06-22
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Dr. Semel has excellent communication skills. The whole office is fantastic!
2026-06-22
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I am so blessed to have Dr Semel as my vascular surgeon. Must caring and sincere Provider I have. His staff is amazing too!!!
2026-06-17
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Dr. Semel was great! He explained procedures and tests in a very clear way and he answered all our questions. He was patient, friendly, and very compassionate. I am very confident in his experience and ability to care for my healthcare needs.
2026-06-17
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Dr. Semel is obviously well versed on my type of concern, and was pleasant, informative and respectful.
2026-06-14
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Great experience!
2026-06-10
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above what Iexpected. He made a referral for me.
2026-06-08
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I feel very lucky to have this doctor! He is so knowledgeable. I trust him completely.
2026-06-09
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Dr. Semel is an amazing surgeon. He's very patient. He explains things. He understands your fears. I would highly recommend him if you needed a bapillar surgeon.
2026-06-05
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kind and compassionate
2026-06-04
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Dr Semel was very professional and thorough. He contacted my primary right away with any concerns he had. I would definitely refer him to others.
2026-05-27
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My appointment detail in the gateway said to use entrance two. I had to be directed to entrance one because there had been changes.
2026-05-27
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Very capable
2026-05-26
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I had a very positive experience with Dr. Semel. I've been seeing him for a year and a half now. He's a consummate professional each and every time I go in, I have confidence in his ability and yep, and I'm glad I got cleared on the vascular front, but Dr. Semel is great.
2026-05-28
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Dr Semel is a wonderful, caring physician. I am so fortunate to have him monitoring my case.
2026-05-27
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I'm thrilled that I have Dr. M. Semel as my Dr.. he is warm and professional. He listens and gives you options. Plus, he says if I need him, he will be available.
2026-05-25
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Dr Semel is very kind and explains test results clearly
2026-05-25
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I had a great experience with this care provider, very professional, explained everything and did a fantastic job with my procedure.
2026-05-18
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Very professional and knowledgeable - very helpful
2026-05-15
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Everything was excellent
2026-05-14
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As a new patient of Dr. Semel, I would definitely recommend him! He was very patient and listened carefully to my health concerns.
2026-05-14
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very talented. great communicator . very nice manner. respectful. will nit hesitate to contact him in the future if I need too.
2026-05-15
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All went on time and as expected with all staff at the office.
2026-05-13
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Love this man - saved my life and gave me hope I could live - help me with everything I needed to walk again and encourage me to work hard at all the therapy and work harder at pushing myself to accomplish these task
2026-05-12
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I'm satisfied with visit.
2026-05-05
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Both hurried me and spoke too quickly.
2026-05-05
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Dr. Semel and the ENTIRE staff at this particular location are ALL simply EXCEPTIONAL! Every visit has been a pleasure; they're all courteous, MOST professional, attentive and friendly.
2026-05-04
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Very pleased with the professional way I was treated
2026-05-04
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All is good ?
2026-04-30
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Visit was informative, and provider listened carefully to my concerns.
2026-04-29
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I have faith in Dr Semel. Always treated with respect by him and his staff
2026-04-29
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Very professional and knowledgeable and confident.
2026-04-25
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Dr Semel is a fine doctor and surgeon. The outcome from my surgery has been perfect.. I am so pleased to be able to walk comfortably again.
2026-04-25
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Dr. Semel recognized the importance of our time.
2026-04-23
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Having worked in healthcare for 30 years, I find Dr Marcus Semel to be is a highly skilled surgeon who is also professional and kind. It has been my very good fortune to have him as my surgeon. He saved my life and gave me the gift of time. I am thankful each day for his skill, professionalism and kindness.
2026-04-21
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Did not have to wait and everyone is professional yet friendly
2026-04-20
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Dr. Semel is very professional and friendly. You makes you feel comfortable talking to him.
2026-04-20
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Very professional
2026-04-20
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Yes, he was, my doctor was my first meeting him and I thought very nice, he was very, very nice. He greeted us well. He was very nice to my care, my daughter and my husband and he answered all the questions that we had, very professional and very pleasant. I liked him very much. It's the first time I've met him and I thought he was one of the nicest doctors I've had in a long time. So that's my opinion on that. And the same went for the nurse. I don't know whether this is on the same thing, but the nurse was very, very nice too. Thank you.
2026-04-20
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Good listener explained things so I could understand. Very personable and knowledgeable.
2026-04-16
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Dr Semel was very helpful and thorough .
2026-04-15
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Great Doctor
2026-04-15
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Dr. Semel should be receiving a promotion and a pay raise.
2026-04-16
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Dr. Semel is a great doctor and terrific person. He was thorough in my follow up appointment, and him and his nurse helped me with putting my socks and shoes back on.
2026-04-14
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Explained procedure thoroughly. Professional and caring.
2026-04-13
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I became aware of Dr. Semel because my husband was referred to him and I attended his meetings and was very pleased with his professionalism, his candor, his ability to give good direction and listen well to my husband's needs and cares. I agreed with his plan and when it became time for me to make a change to a vascular surgeon that I felt I would respect and work well with, I chose Dr. Semel. It has paid off. It continues to be a good relationship. He is sensitive. He is compassionate. He listens. He also spares me additional testing that is not necessary. He is correct with his recommendations.
2026-04-06
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Thank you for your services that has been provided to me.
2026-04-12
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My physician was very informative and was a great help for my issue.
2026-04-02
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Dr. Semel is a Dr.s Doctor! Knowledgeable and caring. Explains everything in understandable language
2026-04-01
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Nice guy ! We spent more than enough time chatting - he thoughtfully explained what showed up in the CAT scan and a plan to address it
2026-04-01
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it was my initial encounter with this provider and he listened to my concerns pretty well and am looking forward to getting my results from the tests he ordered
2026-04-01
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Visit included only echocardiogram by very pleasant & professional tech.
2026-04-01
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Very careing
2026-03-31
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Dr Semel is kind, compassionate and overall a fantastic person and doctor. He made sure my question were answered and explained the vein procedure well. I would recommend Dr Semel and his support staff whole heartedly.
2026-03-31
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Very concerned and lisened to everything I had to say. I feel very comfortable going to Dr Semel and wished every Dr was like him.
2026-03-30
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I love and respect Dr. SEMEL. He always is very attentive and he's always caring and there isn't anything I could say that was bad about him. I love him and I would always keep him for my doctor. And have a nice day.
2026-03-26
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Dr. Semel is positively awesome in every respect.
2026-03-26
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Very informative took time to explain my situation and options in an easy to understand manner
2026-03-23
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He couldn't have been better. He did everything right. He was courteous. He gave me the information. He was inspiring. He was fun to be with. And he got me, just walked me down the hall to get another, what is it called, gas, ultrasound. The guy's fabulous. Okay, that's it.
2026-03-23
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My visit went very well. My doctor and all of the technicians and nurses and receptionists, everyone took care of me as I would expect and I had a good visit. So I'm very happy with the services I was provided.
2026-03-19
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Excellent doctor
2026-03-18
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Dr Semel was caring, understanding and professional. He explained things clearly and put my concerns to rest.
2026-03-15
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This was my first appointment with Dr. Semel. He had reviewed my test results carefully and explained my condition in terms I could understand. I was very impressed by his explanations and also his plan for the next steps going forward. I was anxious going in but came out of the appoitment feeling much more comfortable that I was in good hands with Dr. Semel.
2026-03-15
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Continuing to use his services is highly appreciated.
2026-03-12
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The doctor was very efficient and went over everything so I could understand and everything went fine, so I was very satisfied.
2026-03-12
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Courteous and knowledgeabl
2026-03-11
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I am so grateful to have Dr Semel for my doctor. He is incredibly knowledgeable, kind & professional - great manner with patients!
2026-03-09
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Dr Semel is terrific. He understood all our concerns and explained possible options pros and cons. We left feeling very good about the care we were given.
2026-03-09
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He was very pleasant. He was very informative and a very nice person.
2026-03-09
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My first time seeing this doctor. He was very attentive and helpful.
2026-03-05
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Dr Semel and staff are some of the very best. Happy to have the best !
2026-03-05
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Doctor Semel has always put me at ease. Always enjoyable to be his patient
2026-03-04
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first time seeing a this specialist. He was attentive to learning my medical history. He will arrange necessary follow-up testing.
2026-03-04
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Everyone was great. Very present and professional.
2026-03-04
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Yes, my experience with Dr. Semel was very good all the way around. I had no issue whatsoever with any aspect of the visit. And it provided me, actually, with a certain sense of assurance and put me a bit more at ease than I had been. So I would say, you know, he did a very good job with respect to my visit.
2026-03-04
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Dr. Semel is just remarkable in how he remembers all of my details, asks appropriate questions, follows up, spends plenty of time. He's just an incredibly kind, thorough, and intelligent doctor.
2026-02-20
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Excellent explanation of my options and Dr. Semel took the time to listen to what I had to say.
2026-02-18
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I found Dr Semel to be a wonderful doctor who is easy to talk to, answers any/all questions, and has a calming demeanor. I feel fortunate to have had him for my healthcare.
2026-02-16
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Dr. Semel is the best
2026-02-28
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Dr. Semel and staff were very polite, prompt and very well organized.
2026-02-26
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Receptionist was extremely professional and polite, [redacted] who did the testing prior to my seeing Dr Semel was extremely professional and down to earth. Upon going to the exam room I met [redacted] who was also a consummate professional and friendly and polite. I then met with Dr Semel who continued to be an amazing doctor and both a caring and credit to your hospital. I have nothing but praise for the entire staff
2026-02-05
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Excellent care, courteous and friendly..professional across the board
2026-02-04
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Excellent cardiovascular doctor.
2026-01-29
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He has a sense of humor.
2026-01-27
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Yes, very happy with the doctor. He's knowledgeable and friendly and all that other stuff I answered in a positive form.
2026-01-29
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Dr. Semel is absolutely amazing. He is probably the best doctor I have in my portfolio. I am thrilled he sees me. He's a professional. He's a great guy with an incredible memory. He remembers everything about me. He's even gracious enough to call me when my wife passed away. I cannot say enough good things about this gentleman. He's amazing.
2026-01-28
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The attentiveness and skill of communication realizing I may have been having difficulty hearing and understanding with all he had to say-
2026-01-25
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Dr. Semel was very patient and a good listener and explained everything in a manner that I could understand. [redacted] So I had an excellent experience at your office. Thank you.
2026-01-22
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Excellent car
2026-01-22
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Dr Semel has an excellent "bed side manner" He explains what he is doing and what l, as the patient,should know.
2026-01-19
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I have had Dr. Semel for years and he's a wonderful provider. He's very easy to talk to. He's very understanding. He went into things in depth. He is an excellent, excellent doctor. I found that the nurse practitioner, or no, the MA, she was very courteous. She was very cautious. She did her job well. It's a little bit difficult to understand because she was wearing a mask, but that is nailing on her part. That was just the standard practice, I believe. But that practice is always efficient, always very professional, and always on time. They are an excellent, excellent provider.
2026-01-15
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I enjoy being with Dr. Semel because I feel confident in his care and I also feel he's a very kind, caring surgeon because he's always paid attention to all the aspects of my health. So I really trust him. [redacted]
2026-01-12
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Dr. Semel provided the best possible care for my husband for many years and my first visit on Monday as his patient has continued that. He has a nice way of making you feel comfortable.
2026-01-11
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Excellent
2025-12-29
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Saved my leg
2025-12-23
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Kind, caring individual. Professional & extremely skilled.
2025-12-22
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Great
2025-12-17
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I am so thankful for all of the care i have experienced this past year at Massgeneralbringham
2025-12-16
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I've always had excellent care from this provider. He is very thorough, and listens to any concerns I have.
2025-12-16
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I can't say enough about Dr. Semel. I received excellent care and he spent plenty of time listening to and alleviating my concerns. I highly recommend him.
2025-12-15
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Dr. Marcus Semel is kind, caring, follow-up, and very professional. Great bedside manner.
2025-12-15
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Clean facility, prompt attention by all
2025-12-09
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He's extremely professional and caring and informative and I feel extremely comfortable with him, him and his ability. I think he's one of the best doctors around. That's it on that.
2025-12-08
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He is able to put you at ease.
2025-12-08
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Always great!
2025-12-04
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Dr. Semel has been my Vascular Surgeon for 10 years and I like him very much. I hope he 's still in practice for at least the next 10 years!
2025-12-02
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The best!!! Every par of the visit was excellent
2025-12-01
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Excellent
2025-12-01
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Everyone including the ultra sound technician was friendly, efficient and informative
2025-12-01
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Dr Semel was respectful and explained what I needed to hear well. I have confidence in this care provider.
2025-11-30
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Great doctor
2025-11-24
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My experience was excellent.
2025-11-21
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I was grateful to have been referred to this provider, and grateful for the understanding I gained regarding the condition that was the reason for this appointment.
2025-11-19
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I rated him a ten because I trust him fully with care.
2025-11-20
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Dr Semel is great, very knowledgeable and helpful.
2025-11-17
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Every part of scheduling to followup appts was excellent. I have total confidence in Dr Semel. He's the Best!
2025-11-17
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Dr. Semel is a great doctor, I have been going to him for a long time. He has a great understanding about my issues. Never rushes me
2025-11-17
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Very good experience
2025-11-12
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Very helpful
2025-11-12
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I truly appreciate the respect, kindness, concern and professionalism that I've always experienced with everyone at this facility. Not to mention that it's clean, never crowded and always takes appointments on time. What more could you ask for? They are exceptional in every way!
2025-11-11
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My experience was excellent. The doctor was great at explaining everything perfectly to me and my wife during our visit. His talent and knowledge is outstanding both my wife and I we both impressed.
2025-10-28
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I just want to thank all who treated me respectfully and listened to the complaints that I had. And it means a lot when you're not feeling good for doctors and nurses to listen and to treat people with love and respect. Thank you all.
2025-10-30
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Dr. Semel continues to provide me with the care And reassurance, I need after having him perform such a difficult surgery over the last several years. He has been easy to talk to. And listens to my opinion and my health concerns. I am so grateful to receive the care and compassion that Dr. Semel has provided to me.
2025-10-29
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Very happy with dr semel his care, and professionalism.
2025-10-27
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He's the best!
2025-10-27
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Professional and caring
2025-10-20
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Greeted me with a warm smile and spoke to me about our last appt. Then proceeded to listen to my concern. Gave a solution to my concern and then reminded me to call if any other issues needed to be addressed. Excellent meeting.
2025-10-15
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They are the best.
2025-10-14
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This was my first visit with Dr SEMEL. I was very comfortable talking with and he listened intently to my concerns. He was very informative and I felt the information he shared was helpful. initially, I was apprehensive to meet a new doctor and learn about the medical my issues I was experiencing, but he reassured me and I'm comfortable to take the next steps. I highly recommend Dr Semel.
2025-10-13
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Very caring and professional
2025-10-09
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top notch.
2025-10-09
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Exceptional visit in all aspects.
2025-10-08
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He was great. Dr. Semel listened to what I was saying and explained in easy to understand terms my prognosis. He was caring and put me at ease immediately.
2025-10-06
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Great doctor Great nurses Great staff A+
2025-10-06
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I feel very blessed to be in Dr. Semel's care. He is knowledgeable, professional, and a fantastic surgeon. He explained everything and put me at ease.
2025-10-02
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Always the best service by a team of knowledgeable professionals.
2025-10-01
Accepted Insurance
- Tufts Medicare Preferred
- Wellpoint
- TriCare
- Railroad Medicare
- Tufts Health Plan
- MassHealth
- Beech Street
- Mass General Brigham Health Plan
- United Health Care
- Coventry
- Medicare
- Multiplan
- Medicaid RI
- Fallon Health
- Commonwealth Care Alliance
- Cigna
- Blue Cross Blue Shield
- Senior Whole Health
- Aetna
- WellSense
- Blue Cross Blue Shield Medicare
- Harvard Pilgrim Health Care
- Humana
- Medicaid NH
- Medicaid ME