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Marc Theroux, MD

4.9 out of 5 (489 Ratings)


Internal Medicine / Primary Care

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Please Read regarding COVID-19

Please call the office before coming in for your appointment if you are experiencing any of the following symptoms or have been in close contact with a confirmed case of coronavirus (COVID-19) in the past 14 days: fever, chills, or body aches, cough or shortness of breath, fatigue, sore throat, headache, new loss of sense of taste or smell, gastrointestinal symptoms (e.g. nausea, vomiting, diarrhea,) rash or COVID toes (e.g., swollen, discolored toes.)
For the safety of our patients, providers and staff during the COVID-19 crisis, Southcoast Health has temporarily suspended online scheduling to ensure we are properly screening patients and appropriately directing care. Southcoast Health will resume online scheduling as soon as possible. In the meantime, please call 844-744-5544 for more information or to schedule an appointment.

About Marc Theroux

Dr. Theroux is board certified in internal medicine and is on the active medical staff of Charlton Memorial Hospital He serves on the diabetes advisory and continuing medical education committees at Charlton.

Dr. Theroux is a graduate of Georgetown University School of Medicine, and completed his residency in internal medicine at the United States Air Force Medical Center Keesler in Mississippi, which is affiliated with Tulane University School of Medicine.

He is a member of the Alpha Omega Alpha Medical Honor Society and the American Medical Association.


Marc practices at the following locations:

Southcoast Physicians Group Internal Medicine

534 Prospect Street
Fall River, MA 02720

P: 508-973-7766

Get Directions 41.7085319 -71.14524369999998

Insurances Accepted

Southcoast accepts most major insurance plans. Call the Southcoast patient registration department at 844-297-2952 or your health plan with any questions regarding coverage.

Provider Ratings

Rating Willingness to recommend provider’s office Overall Provider Experience Courtesy and Respect of Staff

Patient Comments (81)

At Southcoast Health, we strive to deliver exceptional patient care along with an exceptional patient experience. We appreciate all of your feedback and share your comments to recognize the wonderful care our teams provide to you as well as identify areas for improvement.

  • I have no problems with South coast ! And I love Dr Theroux and staff !!

  • Nothing lack of knowledge is nothing but make my anxiety worse. Living in the unknown

  • Always a pleasure to see Dr. Theroux!

  • I was unhappy with the amount of people that were sitting in the waiting room. Although we were spaced apart, I just thought that there were still too many people sitting in the waiting room at one time.

  • Appointments are always on time.Also the staff and Doctor Theroux are always a pleasure on my visits.

  • I have complete confidence in Dr. Theroux

  • perfect as is

  • Dr. Theroux's office is one of the most attentive and most caring offices I have ever dealt with in my entire life. He's also a wonderful physician and would highly recommend him to everyone that I know. Thank you.

  • Dr.Theroux consistently goes above and beyond to provide the best quality care possible for myself and my family. I am confident in his knowledge,skills and that he always has my interest in mind.

  • I was treated with respect and courtesy. My experience was excellent and there is nothing that would improve my experience because it was perfect.

  • My visit meet and exceeded my expectations. It was More Than Medicine.

  • All went as expected or above.

  • I have appointments every six months and every time I go all staff are very welcoming. Dr. Theroux is the best and his nurse [Name] is wonderful!

  • I am always pleased with my visits. Dr Theroux is caring, compassionate, and very thorough during my visits.

  • I trust Dr Marc Theroux with my health. I have been his patient for over 30+yrs. He is patient, compassionate, attentive, responsive to any questions & explains anything asked to ur satisfaction. I went in w concerns about my kidneys. We went over past labs & tests. We made a partnered plan of future labs & watching any further concerns I have. He always asks how I am mentally knowing I'm a cancer survivor in a covid world.

  • Should not have to wait a half hour past my appointment time to be seen.Need to have someone available at checkout to schedule follow up appointments. Health summary was not available because there was no one at check out to provide a copy of it. Not everyone is able to access my chart to obtain the info. Promises of callbacks with schedules just don't happen. I honestly don't know how elderly people are able to sustain their health. That said, Dr. Theroux is the best of the best!

  • Set next appointment before patient departs office.

  • Dr. Theroux is the best. He is caring and always there to help you.

  • No recommendations very efficient.

  • Everyone was courteous, knowledgeable, caring and extremely efficient. Dr. Theroux is the best.

  • Answered all of my concerns - did a thorough exam and did not rush - took as much time as I needed to feel comfortable.

  • 2 prescriptions was sent to pharmacy in early morning still haven't heard from cvs and it is 630 pm. This is likely a cvs problem. Not sure

  • On time

  • Great care given!

  • Dr Theroux deserves the best Dr ever award. He is truely amazing both medically and personally. He also has the most efficient office staff that I've been dealt with.

  • Dr. Theroux has been my provider for a number of years now and I have great confidence in him. He has always listened to me and given me advice and put me in contact with other doctors that I needed and what not. Back in 09 I was diagnosed with autoimmune hepatitis, and he transferred got me transfer it up to Brigham and Women's in Boston so I had the best help there for a liver specialist because we did not have one here in Fall River and he sent me there and I have great confidence with him, that he will take care of me all the time.

  • I wanted to hit 10!! Dr Teroux is terrific. & I love his office staff

  • Dr Theroux always takes the time to speak to me as if I was the only patient that he had. I feel very safe and am able to ask any question and know that he will take the time to answer it to my satisfaction. I couldn't ask for a more qualified and concerned physician.

  • From the moment I got there this afternoon the staff was welcoming and yet very careful about covid and I truly appreciated that Dr. Theroux is without a doubt the best doctor I've ever had. I have a complicated history and work with a number of specialist in [Name] And before I even before Dr. Theroux even sat down it was clear to me that he had already read all the notes from my rheumatologist up at the [Name] And so I had brought notes myself and didn't even have to use them because he knew all the latest information on my condition. He is simply a gift to me and other members of my family we are so*

  • Marc Theroux is a wonderful physician

  • always attentive and wonderful care.Fr. [Name] [Name]

  • Dr Theroux and staff are great and it was a pleasure to participate in this appointment

  • Dr. Theroux & his team always deliver perfect medical care. They all put the "care" back into healthcare. Everyone should have a physician like Dr. Theroux. Thrilled to see [Name] is back - thank God! [Name] is an outstanding professional & simply angel to all their patients.

  • I have always been extremely satisfied with this provider since the first visit they are approximately 20 years ago

  • Not a thing to improve

  • Couldn't ask for a better primary care physician - dr Theroux is the best! The staff is caring and listens to the patient

  • Dr. Theroux is thorough and takes his time to understand his patients.

  • My doctor always takes time to listen, and then explains everything. He is a very good Doctor and I highly recommend him!!'

  • Dr Theroux is the most thorough and compassionate Dr at Southcoast

  • Very positive experience.

  • Always the best care. Never had a bad experience.

  • The md and office are wonderful

  • I received the best care I could ever ask for .. Dr- Theroux And his staff are amazing always so caring .. it’s like your part of their family ..

  • The only thing you could do to make it better is clone Dr. Theroux 

  • Dr Theroux is top notch--I fully trust him

  • Good job

  • Annual physical with Dr. Theroux was excellent. He is the best. Thanks

  • Doing a wonderful job in this difficult time !

  • Everything's good, very good, very good. I'm very happy with you. I've been with you for long long time with Dr. Theroux, very very happy the way he treats me.

  • Dr Theroux and his staff are irreplaceable. They care about the patient which is what it is supposed to be all about.

  • Yeah, every time I go to that office it's the best. Dr. Theroux is the best. Everybody in that office is very cordial and I'm pleased to work with everybody in that office. But Dr. Theroux is a 10 10+. Thank you.

  • Dr. Theroux has been great to see for my yearly physical. As a lifelong Asthmatic, he provides me with advice backed up by data from my medical/family history. Very knowledgeable and easy to talk to. I highly recommend him.

  • Efficient and friendly

  • Dr. Cares.

  • Dr. Theroux and his office, [Name] [Name] [Name] are always wonderful! They help me get answers tbat I need further testing when necessary and Dr. Theroux leaves no stone unturned! Wouldn't see anyone else! He is a Godsend![Name][Name]

  • Marc is an excellent physician and always spends the time with me. I never feel rushed and he explains things in detail. His associates are friendly and make you feel welcome.

  • I felt very taken care of and also safe.

  • Dr. Theroux and [Name] his medical assistant, are fantastic, always listen, and always go above and beyond. I've been a patient for many, many, many, years and I regret the day that I know Dr. Theroux at some point, will retire. He's a fantastic doctor, but more than that, he's a great friend.

  • Good very responsive to my needs

  • It could not be any better. Dr theroux and the staff are as good as it can get.

  • Everyone I spoke to in the office was very patient friendly. I sent a message thru my chart and received a reply back the next day. The follow thru went well. With a televisit you really have to be by your phone. A few phone calls take place before you actually have the visit. It’s a process but I didn’t mind especially in this Covid time.

  • Dr. Marc Theroux is the best. They dont get any better than him.

  • Because of covid 19 no one was at the checkout station to schedule next visit, also did not get lab slips for next visit.

  • Awesome, Safe experience! Dr took time to allow me to discuss my health! Excellent experience as always!!

  • Dr. Theroux is the best. Very thorough and proactive.

  • Dr. Theroux & [Name] also always provide me with all the answers to ensure the best of health for their patients. I so appreciate their care during this most difficult time. They are the best!

  • Dr. Theroux is an excellent physician that has taken care of me for almost 3 decades. He is very thorough, takes the time to explain things, and his follow up is excellent.

  • Visit with Dr. Theroux was excellent as always. He is simply the best...

  • Explained our concerns through!

  • Dr. Theroux is the best. He has been my PCP for many years. He attention to the details of my health are precise, accurate and complete.

  • The staff at south coast - Bordon Medical and Dr. Theroux treat me very well when I am ill or need a routine checkup. I feel confident with the services provided and count on them for my health care.

  • Dr. Theroux is the best doctor I've ever been to a very thorough and tells you exactly how things are how you are. If you have any questions, he answers them. He's just wonderful wonderful doctor.

  • For us hearing impaired it’s difficult to hear because of masks but better than a tele visit

  • The provider was dr. Theroux himself. He was able to actually see me and let me see him which I found very helpful, was like an onsite appointment. He knew everything about my background. I mean he's just a wonderful doctor anyway, so I'm very pleased with both Dr. Theroux and Charlton and I would definitely recommend him and the hospital to all my friends and family.

  • I have been going here for years!!! and I would never change to anyone else. They are all fantastic!!

  • With covid its very upsetting as everyone is a little behind but I must say that the staff is short. We had to wait an hour, which is unusual in out in the hot sun, not any of doctors (INAUDIBLE) staff, but more staff need to be called back and this needs to be taken into consideration. Thank you very much.

  • Dr Marc Theroux and his Medical Assistant, [Name] [Name] are professional, caring and "go the extra mile" to make their patients feel comfortable.

  • Had a good televisit but prefer to go in person. Much better.

  • Dr THEROUX and staff always provide the best possible care anyone can hope for!!


  • I love Dr Theourx could not be a more professional and competent MD !!!!

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Southcoast Health physician profiles now feature star ratings.  Below, you’ll find frequently asked questions about our process for calculating the ratings.

Why does Southcoast publish survey ratings online?
Southcoast is dedicated to providing patients and consumers with helpful information about the quality of our patients’ experiences. Star ratings published on our physician biography pages are based on actual responses from patients of that particular physician to patient satisfaction surveys that are distributed and processed by a national patient satisfaction survey vendor.

Who receives the survey?
Our vendor sends surveys via SMS or email to all patients seen in our outpatient physician practices who have a valid smart phone number or email address on file with Southcoast Health. Surveys are sent to patients within a few days of their appointment.

How is the Patient Satisfaction Star Rating Calculated?
Star ratings are calculated using an average of all survey responses to each of three questions: Courtesy and Respect of Staff, Provider Overall Rating, and  Willingness to Recommend Provider’s Office.  The star rating displayed on our physicians’ main biography page represents the average of the three measures for that particular physician.