Mark Kogan, MD

Practice: Unio Specialty Care

Specialty: Gastroenterology

Office locations: San Pablo, Berkeley

Most recent review: 1 week ago New
4.9 out of 5
327 Ratings
124 Comments

Dr. Mark Kogan, M.D. received his undergraduate and MD degrees from Northwestern University. After completing his Internal Medicine residency at Cornell University, he went on to complete his Gastroenterology and Hepatology fellowship at the University of Colorado Health Sciences Center. Dr. Kogan has been practicing in the Bay Area since 1987 and has been exhaustively involved in the medical community in numerous leadership roles.

4.9 out of 5
327 Ratings
124 Comments

Dr. Mark Kogan, M.D. received his undergraduate and MD degrees from Northwestern University. After completing his Internal Medicine residency at Cornell University, he went on to complete his Gastroenterology and Hepatology fellowship at the University of Colorado Health Sciences Center. Dr. Kogan has been practicing in the Bay Area since 1987 and has been exhaustively involved in the medical community in numerous leadership roles.

The reviews listed below were collected independently of Unio Specialty Care through rater8. Each review represents an authentic and verified patient experience.

My husband and I both have been going to see Dr Kogan for many years. He is the very BEST to say the least. He’s professional extremely knowledgeable and explains things to make you understand gives you options and puts you at ease every time we go to see him. He’s genuinely cares about his patients he has a way of making you feel that he will do his absolute BEST for you and reassures you that he is there to help you. He is that Dr that makes a difference for those who go to him for his professional help and you feel comfortable in talking with him and I might add he’s got a great sense of humor always puts a smile on our face. One if the greatest attributes about Dr Kogan is he truly cares about his patients we feel very blessed to have him whenever we need his help. And that is a value that is irreplaceable. Dr Kogan is a great asset to the Unio team.

Rated 5 out of 5 stars
(1 week ago) Oct-2026

Great experience. Warm, caring doctor who has great communication skills. I knew I was in good hands!

Rated 5 out of 5 stars
(1 week ago) Oct-2026

The best!!!

Rated 5 out of 5 stars
(1 week ago) Oct-2026

Top gi docter in the bay area period.

Rated 5 out of 5 stars
(1 month ago) Oct-2026

Excellent listener with honestly helpful suggestions. Clear presentation and analysis of the test results. Next steps were clearly detailed. Not rushed at all. Engaged actively in our conversation with open acceptance of my questions and ideas and worries. Top notch doctor.

Rated 5 out of 5 stars
(1 month ago) Sep-2026

Dr. Kogan is a great Dr. He is easy to talk to and is a great listener. He hears your concerns and works with you for a resolution.

Rated 5 out of 5 stars
(1 month ago) Sep-2026

Dr Kogan is highly experienced and has excellent bedside manner. He is very kind, listened to my concerns, asked questions and was very engaged. I felt very comfortable during the visit and felt my concerns were properly addressed. Thank you Dr Kogan!

Rated 5 out of 5 stars
(1 month ago) Sep-2026

Dr Kogan is a very caring compassionate doctor

Rated 5 out of 5 stars
(2 months ago) Aug-2026

No, wait very Accommodating. And listens, it makes you feel comfortable

Rated 5 out of 5 stars
(2 months ago) Aug-2026

Very attentive & professional.

Rated 5 out of 5 stars
(2 months ago) Aug-2026