Mark O’Brien, MD

Internal Medicine

Learn what concierge patient care is all about from those who’ve experienced it firsthand. Dr. O'Brien’s patients explain, in their own words, what it’s like to have a doctor who’s always there for them. You’ll see how Dr. O'Brien goes above and beyond to make a significant difference in the lives of the patients he treats.

Has taken care of my family for over a year, always a pleasure and he is usually on time which is important to me.
Patient
Grand Rapids
I wouldn't go anywhere else! One of the nicest Doctor's you will ever find!
Patient
Grand Rapids
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). We have been very pleased with him and he even saw me in the hospital when I was very sick. Not many doctors do that today.
Patient
Grand Rapids
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. He really took the time to LISTEN to me. Fabulous doc!
Patient
Grand Rapids