Mark O'Brien, MD

Internal Medicine & Nephrology
Grand Rapids, MI 616 774-8200


I wouldn’t go anywhere else! One of the nicest Doctor’s you will ever find!

Has taken care of my family for over a year, always a pleasure and he is usually on time which is important to me.

I have an autoimmune disease that was missed by 2 other physicians in his group. Dr. O’Brien spent 30 minutes with me and after a few blood tests not only was I diagnosed but treated and now I am feeling better than I have in years. (more…)

He left Riverview after 1 year, we were very upset. I find out he moved to IU Health. We will be following him there (wife and myself). (more…)