Mark D. Duncan, MD
Department of Surgery
Johns Hopkins Bayview Medical Center
4940 Eastern Avenue, Bayview Medical Offices, Level 3
Baltimore, MD 21224 Directions
5.0 out of 5
109 verified ratings
109 Ratings, 51 Comments
The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy.
Aug 14, 2026
Dr. Duncan was amazing and calming
Aug 4, 2026
Dr Mark Duncan is not only an excellent Surgeon, but also easy to communicate with patient and caring. They are not many like him around anymore.
Jul 28, 2026
Dr. Duncan is amazing. He is compassionate, listens to your concerns, explained the diagnosis in detail, and made it clear that he was there to listen and help. One of the best doctors I've ever had.
Jul 21, 2026
Dr. Duncan is magnificent! He carefully explains imagery while staying in his lane. His positive outlook is never unrealistic and is supported by findings. He encourages questions and answers them clearly. If asked (and I always do) he will share pics of his adorable grandchild.
Jul 14, 2026
Good
Jul 7, 2026
Dr Duncan is wonderful and I'm very happy he is my doctor
Jun 23, 2026
Provided excellent care. This provider is personable and patient with questions while still keeping the appointment efficient.
Jun 23, 2026
Outstanding, caring, knowledgeable provider!
Jun 16, 2026
Very Professional.
Jun 16, 2026
Very nice as a person and very capable as a doctor.
May 26, 2026
Awesome
May 26, 2026
The provided was professional and addressed on my health questions and needs
May 22, 2026
Scheduling was fast and easy, received a call to schedule on the same day. I requested a video appointment as I am an hour away, they accomodated easily. I could not hear Mark in the beginning but that was a tech issue at my end so we just called each other on the phone but stayed on video. Simple solution. Mark was amazing, smart, kind, explained the situation and procedure I needed perfectly and put me at ease.
May 19, 2026
Dr. Duncan is the best in his field, as well as in his care and concert for his patient. I am so grateful.
May 19, 2026
Clearly knowledgeable, thorough, provided a clear and contextual explanation of my issue in a manner that gave me confidence and great comfort. I feel grateful knowing that my care is in highly capable hands.
May 12, 2026
Very informative and pleasant
May 12, 2026
Your Excellency
May 7, 2026
He was very clear & informative.
May 5, 2026
Very Professional.
Apr 21, 2026
Great attitude, and well spoken
Apr 21, 2026
Knowledgeable and calmed my worries
Apr 21, 2026
Good interacting personal skills
Mar 31, 2026
Great provider. He explained everything very clearly and took his time and had a great bedside manner and treated me with respect.
Mar 31, 2026
Dr. Duncan It's an expert in his field and a kind, caring physician I could not have been in better hands
Mar 24, 2026
Dr Mark Duncan is an excellent top notch Doctor has a great personality & really cares about his patients. If all Doctors were like him , the medical profession would be wonderful.
Mar 17, 2026
Dr. Duncan is hands down the best doctor I have ever been under the care of always provides information and explanations and truly cares about your well-being exceptional!
Mar 10, 2026
Excellent
Mar 4, 2026
Dr Duncan is a wonderful doctor.
Feb 24, 2026
Dr Duncan is patient, kind and very knowledgeable.
Feb 3, 2026
Provide was knowledgeable and personable.
Jan 27, 2026
dr. Duncan is a very good doctor. He shows patients and concerned with his patient. I would recommend him.
Jan 20, 2026
Best Provider ever
Jan 20, 2026
Very Professional.
Jan 13, 2026
Dr Duncan explained my gallbladder problem thoroughly
Jan 6, 2026
Dr. Duncan listened carefully to my concerns and answered my questions thoughtfully. He had clearly prepared for my visit and had a plan of action ready to discuss with me. He carefully and completely explained how he had studied my case and reached his decision for my care.
Jan 6, 2026
Dr Dunkin explains things clearly and listens to my concerns. He takes his time with me and is genuinely concerned about my wellbeing.
Jan 6, 2026
Dr. Duncan left no stone unturned during my visit. All of the information he provided was concise! My 18 y.o daughter accompanied me for my visit and she was also pleased with the way the information was relayed and happy with the service.
Dec 30, 2025
Most genuine and Personal Doctor I've ever worked with.
Dec 30, 2025
Dr. Duncan is very good & thorough. Tian, his assistant is very good as well.
Dec 30, 2025
Dr. Duncan was kind, detailed and an expert in the procedure. He explained my scans and test results to me in detail and helped me understand next step.
Dec 9, 2025
Excellent care, easy scheduling, every9ne worked together on my behalf.
Dec 2, 2025
Dr Duncan and his assistant [staff] were very good! I like the fact that Dr. Duncan takes time to listen to the patient and explains in layman's term. I felt very confident in my recovery after speaking with him.
Dec 2, 2025
I had an excellent experience in every aspect.
Nov 11, 2025
He took the time to explain the surgery to both me and my husband and answered all of our questions
Nov 11, 2025
I am beyond grateful to have had this appointment, I have never had such an experience in all my years dealing with hospitals and doctors! Dr. Duncan was so smart, kind and gentle! Prayers finally answered after 52 years!
Nov 4, 2025
Dr Mark Duncan is an amazing doctor who is friendly and an expert at his profession. I feel so blessed to be under his care.
Oct 28, 2025
The best oncology surgeon!
Oct 21, 2025
Outstanding in every way
Oct 21, 2025
Best provider I've had.
Oct 21, 2025
Dr duncan is the best: as surgeon, explainer and patient care