Mark O'Brien, MD

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

Mark O’Brien, MD

Mark O’Brien, MD

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Mark O’Brien, MD graduated from the University of Michigan with a BS in Zoology. He continued on and received his Doctor of Medicine degree from Wayne State University School of Medicine. Dr. O’Brien completed his residency and fellowship, Nephrology and Hypertension at the Northwestern University School of Medicine. 

Dr. O’Brien is board certified in both Internal Medicine and Nephrology. He is a member of the American College of Physicians and the AMA.

By limiting his panel to 500 members, Dr. O’Brien will be able to partner with you to optimize your well-being.

Dr. Sample has been honored to receive the Washington Consumers Checkbook Top Rated Primary Care Physician Award on many occasions.

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Call us, if you prefer! 616 774-8200