
Highlights
Age Groups Seen
- Adults
- Geriatrics
Languages
- English
Gender
MaleLocations
- Brigham and Women's Urology Clinic
- 45 Francis Street, ASB2-3, Boston, MA 02115
- Get Directions
- phone: 617-732-6325
- fax: 617-566-3475
- Brigham and Women's Urology Clinic
- 20 Patriot Place, Foxborough, MA 02035
- Get Directions
- phone: 617-732-6325
- fax: 508-718-4011
Expertise
Education
- Fellowship: Massachusetts General Hospital, Urologic Oncology, 2013
- Residency: Ottawa Hospital-General Campus, Urology, 2011
- Medical Education: University Of Ottawa, 2005
Board Certifications
- Urology: American Board of Urology, 2016
Insurance
- Aetna
- Beech Street
- Blue Cross Blue Shield
- Blue Cross Blue Shield Medicare
- Cigna
- Commonwealth Care Alliance
- Coventry
- Fallon Health
- Harvard Pilgrim Health Care
- Humana
- 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
Ratings & Reviews
4.9 out of 5
369 ratings, 169 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 4/6/2026
My providers were professional and compassionate, as always.
- Reviewed on 4/4/2026
Dr Preston was great. Showed definite care about my condition. Definitely interested in my care. I am very pleased to be his patient.
- Reviewed on 4/4/2026
Very professional with excellent communication skills. Caring with a positive attitude.
- Reviewed on 4/3/2026
I love Dr. Preston, the man saved my life. He's caring. He listens to you. And I wouldn't go anywhere else. And if anybody I know needs to see an oncologist, it would be Dr. Preston if it was for urology. Thank you.
- Reviewed on 4/1/2026
[redacted] the communication and care was exceptional.
- Reviewed on 4/1/2026
Look forward to getting treatment from this provider. He has my confidence.
- Reviewed on 4/1/2026
I was very happy with everyone I dealt with during my visit. The physician listened and communicated perfectly. I am glad I made the de decision to go with this provider.
- Reviewed on 3/30/2026
Dr. Preston is the best! I've been under his care for almost eight years. Great surgeon. The outcomes from my radical cystectomy are very good. Highly recommended!
- Reviewed on 3/23/2026
Dr. Preston is an extraordinary doctor. His skills and knowledge and expertise are incredible. I have the utmost respect for his skills and knowledge and expertise. I would recommend him to anybody, friends, family. I'd recommend him to anyone. He's also not afraid to take risks, which I think these days is not found in many doctors, but he's willing to. And based on his knowledge and his expertise, I think they very often come out in his favor.
- Reviewed on 3/21/2026
I have no problems. Everybody was great.
- Reviewed on 3/21/2026
He is kind, considerate and very skilled I highly recommend him!
- Reviewed on 3/18/2026
Great doctor
- Reviewed on 3/16/2026
I have very high regard for Dr. Preston. [redacted]
- Reviewed on 3/15/2026
my partner and i were anxious about my visit and what surgical outcome may be in my future. dr preston was very explanatory and we had all our questions answered. we left feeling that i have the correct surgeon and i am in the best place for my bladder cancer.
- Reviewed on 3/21/2026
Dr Preston is the best..... [redacted]
- Reviewed on 3/11/2026
Staff is very professional
- Reviewed on 3/11/2026
Dr. Preston is an excellent doctor and I'm very grateful to be seeing him.
- Reviewed on 3/18/2026
I find Dr. Preston to be extremely good at what he does, caring, informed, and kind.
- Reviewed on 3/7/2026
Pleasant encounter.
- Reviewed on 3/5/2026
the best.
- Reviewed on 3/5/2026
I love my care team
- Reviewed on 3/5/2026
Dr. Preston is empathetic, caring and on target.
- Reviewed on 3/4/2026
Dr Preston has been a valued physician of my health care team. I have great confidence in his expertise and appreciate his caring demeanor He also politely laughs at my corny wise cracks
- Reviewed on 3/4/2026
Excellent care in each and every aspect Of my visit
- Reviewed on 3/4/2026
Dr Preston was amazing. He was professional, knowledgeable and added just enough "light" conversation to the appointment that could otherwise have been very intense. He gave me great confidence in his ability to help me.
- Reviewed on 3/1/2026
I am so grateful that Dr. P could arrange to see me via telehealth when the office was closed in the blizzard. We had traveled the day before to be sure we were nearby for the appt and it got cancelled hours after we arrived. He was so responsive and kind
- Reviewed on 2/28/2026
Dr. Preston has been incredibly professional. He has answered every question I've had and the surgery he performed went flawlessly. I am having an amazing recovery because of him.
- Reviewed on 2/16/2026
I find Dr Preston to be warm, knowledgeable, and pleasant. It is a pleasure to meet with him.
- Reviewed on 2/16/2026
Have confidence in his expertise. Warm, friendly.
- Reviewed on 2/14/2026
Very good
- Reviewed on 2/13/2026
Dr. Mark Preston was nothing but a professional all the way. I really respect his time, listening to what I had to say, explaining things to me thoroughly, and explaining different options that I may have. I'm very fortunate to have him on my team.
- Reviewed on 3/1/2026
Dr Preston is amazing . He is a great Foctir . Very knowledgeable and extremely up to date on the latest medicines, chemo and treatment plans for every patient.
- Reviewed on 2/27/2026
They're always on time. The nurses are very good and I really enjoy the doctor. He's helped me through my cancer and I owe him that. So that's it.
- Reviewed on 2/24/2026
He's an excellent surgeon his follow up care needs work.
- Reviewed on 2/24/2026
Dr Preston is the most compassionate doctor I've ever seen. He is very knowledgeable and has given me new life
- Reviewed on 2/4/2026
top notch
- Reviewed on 2/5/2026
My experience with Mark is very positive. The difficulties I've had are with his back office and a very spotty record in getting back to me about appointments or any other questions I might have. That's it. Thank you.
- Reviewed on 2/2/2026
Professional and kind
- Reviewed on 1/31/2026
I waited awhile for the appointment but once there, every aspect of dealing with Dr. Preston and all others was perfect
- Reviewed on 1/31/2026
Really appreciate the treatment I have received and the expertise that the doctors and medical professionals have displayed.
- Reviewed on 1/30/2026
Dr. Preston was very impressive, very professional, very knowledgeable, answered all my questions, was respectful, and he was easy to talk to.
- Reviewed on 1/29/2026
Excellent physician
- Reviewed on 1/30/2026
Well, Dr. Preston's an excellent doctor. I'm glad to be under his care and I get a cystoscope with him and he makes it bearable, actually. So I appreciate that.
- Reviewed on 1/29/2026
I am guessing I could not find better.
- Reviewed on 1/28/2026
This doctor was a recommendation from another doctor, and I found him very pleasant and personable very much
- Reviewed on 1/22/2026
Very thorough, answered all questions well.
- Reviewed on 1/18/2026
Never rushed, always caring! Answered all questions and plan in place for future.
- Reviewed on 1/18/2026
Very calm, and explains things well. He is very knowledgeable.
- Reviewed on 1/18/2026
Dr. Preston was professional and put me at ease. He gave me information needed to understand my options. He remained open to see me in the future as needed
- Reviewed on 1/18/2026
Dr Preston was thorough, informative, patient, answered all my questions, and even drew a diagram to help me better understand my situation. I was impressed
- Reviewed on 1/15/2026
Dr. Preston has a fantastic bedside manner. He was patient and friendly. He took his time with me understanding my angst about what I am experiencing. Dr. Preston was the one who found problems that my former urologist either didn't see or overlooked... To me, Dr. Preston is expert in his field, and I consider myself among the very fortunate to have him as my urologist.
- Reviewed on 1/13/2026
Nothing to add, [redacted] and Dr. Preston are an absolute pleasure to deal with.
- Reviewed on 1/11/2026
I was quite pleased with my experience with Dr Preston and his assistant and my initial experience with the hospital and reception was very positive helpful and enjoyable
- Reviewed on 12/24/2025
Impressed with the care
- Reviewed on 12/24/2025
A good exper
- Reviewed on 12/28/2025
My experience was and always has been tremendous with Dr. Preston. I am suffering from bladder cancer, which is you may know a serious disease. And ever since I've been in his care for several years, he has been nothing but extraordinary in confidence, make me feel that I'm in good hands, trusting, even though the pain and the procedures sometimes are very tough with him. He makes it so much easier and to understand and just generally all around is probably the most efficient and competent doctor I've dealt with concerns.
- Reviewed on 12/25/2025
Knowledgeable, respectful, polite, good listener, answered all my questions.
- Reviewed on 12/24/2025
He's very easy to talk to and listens to what the patient has to say, besides being a great surgeon!
- Reviewed on 12/21/2025
Excellent knowledge and quality care
- Reviewed on 12/20/2025
Dr. Preston always makes the procedure as easy and comfortable as possible! He explains what is happening during the test!
- Reviewed on 12/11/2025
For some reason, the virtual visit did not occur. I don't know if it was a technical problem or something on my end or on the other end of the line, but there was no virtual visit.
- Reviewed on 12/11/2025
I am my sister [redacted]'s health care proxy and caregiver and Dr. Preston was very good with my sister, addressed her directly and waited for a response from me, which is always a good thing. I like so that my sister feels that she's being addressed and heard and he was very knowledgeable. He spoke to us in plain language so that we could understand and answered all of our questions and we really liked him. Thank you.
- Reviewed on 12/8/2025
As a first visit, Dr Preston was very thoughtful in considering the status of my health issue. . His recommendation to explore more testing to find out exactly what is going on makes sense .
- Reviewed on 12/7/2025
Dr. Preston has been treating me for some time now and he's the best!
- Reviewed on 12/7/2025
Dr Preston is amazing. He clearly cares about his patients. He does a wonderful job explaining complex medical stuff in layman terms
- Reviewed on 12/3/2025
Dr Preston answered all my questions and was very informative
- Reviewed on 12/1/2025
Dr. Preston, has always been a pleasure to deal with even when the news isn't good. However, the news over the last nine months has been very good thanks to the excellent partnering with my oncologist, and Dr. Preston's sensitivity to my needs.
- Reviewed on 12/1/2025
Wonderful experience
- Reviewed on 12/1/2025
knowledgeable, answered all my questions appropriately, and plan of future care answered appropriately.
- Reviewed on 11/24/2025
Fine results So far no reoccurrence
- Reviewed on 11/22/2025
Mark Preston is both a top notch urologist and a kind, calming human being
- Reviewed on 11/16/2025
Doctor Preston was very polite and careful in his analysis for my health situation.
- Reviewed on 11/15/2025
Unlike the previous Doctor, I had seen, Doctor Preston actually asked me what I thought about my situation and how I wanted to deal with it, rather than automatically tell me what he wants to do. That made a world of difference to me.
- Reviewed on 11/14/2025
Dr. Preston is absolutely fantastic. I trust him. He's great. And I just want to be well with him. That's it.
- Reviewed on 11/12/2025
Dr. Preston is thorough and professional. I have great confidence in Dr. Preston.
- Reviewed on 11/10/2025
Dr. Preston is great. [redacted]
- Reviewed on 11/21/2025
Was seen promptly and was familiar with my case.
- Reviewed on 11/8/2025
We were referred to Dr. Mark Preston by a long time care provider, Dr. [redacted]. We are thrilled by the referral. Dr. Preston has a wonderful way about him, and are impression is he is a very accomplished physician / surgeon.
- Reviewed on 11/7/2025
All was good. Nice professional people. Thank you
- Reviewed on 11/2/2025
Dr. Preston was very well prepared for my visit. He was clear about my next steps. And most importantly he game me confidence in going ahead.
- Reviewed on 11/2/2025
the phone visit did not happen. I could see and hear the Doctor but the Doctor could NOT see of hear me. Luckily the Dr called the home phone and we were able to communicate. I had call your Technical Center to ensure i was properly connected and they advised that I was. But....the Dr could not see or hear me. I could see and hear the Doctor. The Technical center said I had to test my internal on my computer. I did not understand a thing they said told me and I had to close the call and my computer down. I am NOT that computer educated. I do not have a 10 year old child to help me. Very disappointed with the technology given...
- Reviewed on 11/1/2025
Seen on time. Appropriate questions and care.
- Reviewed on 10/30/2025
Dr. Preston and his team are professional and caring. Everything was carefully explained along the the future plan of care. I completely trust the medical care from Dr. Preston and his team.
- Reviewed on 10/30/2025
the nurse was very nice, knowledgable, made me feel relaxed went great with dr preston also
- Reviewed on 10/30/2025
Very understanding
- Reviewed on 10/29/2025
I have seen Dr Preston for several years now and he has been great with all of my concerns. I am grateful that he is much younger than I am and I hope he continues in his current position for a long time.
- Reviewed on 10/29/2025
Excellent communitator....
- Reviewed on 10/26/2025
Professional, friendly and precise!!!
- Reviewed on 10/25/2025
Dr Preston and the entire team at the Dept of Urology are easy to work with. They are very professional, friendly and informative.
- Reviewed on 10/24/2025
Dr Preston is always professional and informative..His bedside manner is awesome and refreshing. I am very happy to be with him and his team.
- Reviewed on 10/19/2025
My questions were answered and the visit was complete and to the point. I was very pleased with what Dr Preston had to say.
- Reviewed on 10/14/2025
Dr Preston is the best. Very knowledgeable and explains everything. Willing to listen to all problems.
- Reviewed on 10/13/2025
My virtual visit was provided between surgeries. This is above and beyond! Thank you very much!
- Reviewed on 10/13/2025
Dr. Preston was 40 minutes late to the appointment with no apology or reason given. It gave the impression that my time is less important than his.
- Reviewed on 10/13/2025
Mark Preston, Dr. Mark Preston, I should say, was extremely thorough, covered all my questions, and left me with a complete satisfaction of what of regular officers it should be.
- Reviewed on 10/13/2025
Dr. Preston keeps me well informed about my condition and offers help with any problem I might be having.
- Reviewed on 10/12/2025
Dr. Preston is a knowledgeable, thorough provider.
- Reviewed on 10/11/2025
Dr Preston is attentive, professional and answered all my questions. I Highly recommend Dr Preston.
- Reviewed on 10/9/2025
I have tremendous confidence in Dr. Preston! I am fortunate to have him as my provider. He is certainly busy and in demand!!
- Reviewed on 10/9/2025
The provider was very good and pleased with his care. Trying to get ahold of the BWH Urology Department with significant postoperative complications was difficult & unacceptable. Rarely were the phone answered or Gateway or voicemail messages answered.
- Reviewed on 10/8/2025
Dr Preston did an incredible job with my prostate surgery 16 months ago. Everything is functioning perfectly and all is good! Many thanks to him for doing such a great job.
- Reviewed on 10/5/2025
Dr Preston is excellent
- Reviewed on 10/11/2025
He is extremely knowledgeable and experienced. His bedside manner is great, he cares about me as a patient and a person. I left the appointment knowing I was in good hands and feeling very positive about my upcoming surgery.
- Reviewed on 10/2/2025
Dr Preston has been seeing me for Kidney and Bladder cancer since [redacted] and I have very happy with his work and bedside manners
- Reviewed on 10/2/2025
I would have like for him to better explain the biopsy procedure.
- Reviewed on 10/1/2025
Great surgeon.
- Reviewed on 10/1/2025
Dr. Preston always provides compassionate care, listening to my concerns and explaining things clearly. I never feel like he is rushing me out but is giving me the time and care I need.
- Reviewed on 10/1/2025
Dr. Preston has been treating my CA since 2017 and has always kept me up to date on my issues
- Reviewed on 9/29/2025
I am extremely happy to have this care provider on my team of experts that know and understand my condition.
- Reviewed on 9/28/2025
Absolutely thrilled with Dr Preston. Gave me some piece of mind with my cancer diagnosis. Went out of his way to explain things to me, and listened to what I was saying. So grateful to have found him and that he will be part of my medical team during this tough time.
- Reviewed on 9/28/2025
Dr. Preston is beyond excellence, best ever!
- Reviewed on 9/16/2025
Doctor and staff were excellent
- Reviewed on 9/14/2025
I was impressed by the way he reviewed the past record of my cancer, creating a drawing of where it was and where it recurred. I was concerned about a past injury to my kidney, he immediately ordered the appropriate test. Many thanks.
- Reviewed on 9/13/2025
Excellent
- Reviewed on 9/10/2025
Dr Preston is a genius
- Reviewed on 9/7/2025
I feel a rapport with Dr. Preston. And strong confidence that he is doing the best for me and my condition. I trust him and I like him.
- Reviewed on 9/6/2025
I was very pleased with the doctor. He listened very carefully and explained what I needed to know. The only hesitation on his part was if I needed to get in touch with someone immediately after hours. It appears I'd have to go through a hospital and get an on-turn, core intern.
- Reviewed on 9/4/2025
Respectful, knowledgeable
- Reviewed on 9/4/2025
Best ever , easy to speak with ...
- Reviewed on 9/3/2025
I truly hope this care provider can quickly inform me what my health issue is and, as soon as possible, perform or recommend a surgery or a procedure as I have been suffering from my urinary urgency, lack of a good night's sleep and burning problems during urination for several months now!
- Reviewed on 9/3/2025
Dr. Preston listened to me and let me tell him about my symptoms and concerns.
- Reviewed on 9/4/2025
Dr. Preston knows my condition and I have total confidence in my treatment . Very happy with the care I get.
- Reviewed on 8/31/2025
Excellent care. Finally some clear answers and expected treatments Thank you Dr Preston
- Reviewed on 8/24/2025
I have the highest regard for Dr. Preston
- Reviewed on 8/15/2025
My experience with Dr. Preston was excellent from the first time that I met him. He is lovely, very responsive, skilled. I have only good things to say about him. He's terrific.
- Reviewed on 8/14/2025
Dr. Preston provided information about my cancer diagnosis and treatment in a way that for this first time since my diagnosis gave me back control of my thoughts and a clear path forward. He does a great job at listening to the patient, and providing information in a way that is relatable and gave me piece of mind. I was very thankful form my trip to Boston to meet with Drs. Preston, [redacted] and [redacted].
- Reviewed on 8/13/2025
Dr. Preston is very professional, knowledgeable and kind. Highly recommend him and his staff.
- Reviewed on 8/15/2025
He was very thorough and went over what my procedure was gonna be and what the future of my medical could look like. We were very pleased knowing especially what we were facing.
- Reviewed on 8/10/2025
Dr. Preston was extremely professional, knowledgeable, caring, and personable. He made me feel important and made me feel very comfortable about the decision that we agreed to take. I would highly recommend him to others.
- Reviewed on 8/4/2025
Dr. Preston is very knowledgeable, and I am very glad that I am in his care. [redacted]
- Reviewed on 8/1/2025
I was impressed by his competence and professionalism
- Reviewed on 7/31/2025
I am confident in Dr. Preston for my care [redacted]
- Reviewed on 7/31/2025
Dr Preston is the best. He professional, personable and courteous. I would not be alive today if not for the skills and knowledge of Dr Preston. He saved my life. Thank you Dr Preston
- Reviewed on 7/30/2025
Mark Preston was recommended to me by Dr [redacted] i couldnt be happier. He has a great demeanor about him , very professional and very informative. I couldnt be happier. Thank you Brigham
- Reviewed on 7/30/2025
I'm very thankful and grateful to be dr Preston patient. Thank you so much
- Reviewed on 7/27/2025
He's a doctor's doctor - so grateful to be in his hands.
- Reviewed on 7/26/2025
Knowledgeable and caring
- Reviewed on 7/24/2025
very good
- Reviewed on 7/21/2025
it was a net positive despite his lateness
- Reviewed on 7/19/2025
Doctor is always pleasant.
- Reviewed on 7/3/2025
Dr. Preston was professional, very knowledgeable and took the time to understand my perspective about my prostate cancer. He did not rush me and provided information about his experience with conducting prostate removal surgery. There was a lot of information, but he consolidated it well.
- Reviewed on 7/3/2025
Outstanding caring Dr.
- Reviewed on 7/3/2025
Mark Preston is very knowledgeable and professional. A good provider and has handled my condition well.
- Reviewed on 7/3/2025
Great Doctor
- Reviewed on 7/3/2025
Happy to be treated as a person and not a number or billable assets
- Reviewed on 7/2/2025
Dr. Preston is a great physician and is highly professional.
- Reviewed on 7/1/2025
Dr. Preston is knowledgeable and thorough. I feel confident in his care.
- Reviewed on 6/30/2025
It's always a pleasure to visit Dr Preston, especially when it's good news.
- Reviewed on 6/30/2025
Provider wrote a prescription that was rejected for lack of prior approval -- insurer asked for the provider to call. There has been poor follow-up and I have not been able to get the prescription filled.
- Reviewed on 6/28/2025
Thanks
- Reviewed on 6/25/2025
The best
- Reviewed on 6/22/2025
Excellent surgeon. Nice person. Very efficient.
- Reviewed on 6/21/2025
My Cystoscopy experience with Dr. Mark A. Preston, MD, MPH at BWH Urology [redacted] was excellent.
- Reviewed on 6/18/2025
Dr. Preston is thorough in reviewing my medical history and in providing a clear path towards future management of my urological needs.
- Reviewed on 6/14/2025
Dr Preston has always been professional and caring. He is an excellent doctor.
- Reviewed on 6/12/2025
I have been seeing Dr. Preston for about 10 years now, and he has always been 100% professional and provides excellent care. Excellent communicator and very efficient.
- Reviewed on 6/12/2025
The doctor was very down to earth explaining everything. I enjoyed that he kept thing mostly simple and if I did not quite understand, he used different terminology. He is a pleasure to do business with.
- Reviewed on 6/12/2025
The visit was an informative and helpful followup of my health conditions by Dr. Preston and the appointment by virtual visit was appropriate and efficient. I am most grateful to have Dr. Preston as my urologist.
- Reviewed on 6/12/2025
Easy to talk with and very knowledgeable.
- Reviewed on 6/14/2025
My visit with Dr. Preston was really quite good. He clearly is well trained and knowledgeable in the field and we discussed options of management of a potential prostate cancer and we agreed on many of the points and he was very clear that there was no definitive answer and that there were ways of dealing with it and we agreed on a plan. However, he did not know at the beginning of the conversation who the referring physician was, nor had he received the information received from my private physician prior to the visit. [redacted]
- Reviewed on 6/7/2025
Dr. Preston is a great Doctor and I am really happy to see him and get all my questions answered. He explained everything in a very simplistic understandable way I recommend him always to anyone who asks me
- Reviewed on 6/2/2025
Appointment went well as expected
- Reviewed on 5/28/2025
Excellent
- Reviewed on 5/27/2025
He was excellent.
- Reviewed on 5/27/2025
smart, knowledgeable, personable, good communicator, trustworthy
- Reviewed on 5/27/2025
Dr. Preston is fabulous!
- Reviewed on 5/23/2025
This was a first visit with Dr. Preston because Dr. [redacted] has moved on. I found him to be an extremely personable and helpful communicator. The new prescription he provided seems to have immediate, positive results. I look forward to a good, continuing physician - patient relationship with him. I am also glad that the [redacted], PA, remains on my patient-care team.
- Reviewed on 5/19/2025
Yes, I trust Dr. Preston and he's very knowledgeable and I'm very comfortable meeting with him.
- Reviewed on 5/19/2025
I have been a patient of Dr. Preston's for [redacted] years now. I was diagnosed with bladder cancer in 2020 and he has taken exceptionally good care of me. He has guided me through this whole procedure and has given me wonderful advice. And each six months that I go, thank God everything's been wonderful and he's just very kind, compassionate and understanding. And I appreciate him as my doctor. Thank you.