OSF Medical Group Glen Park Internal Medicine is a busy primary care practice in Peoria, Illinois. It is a residency training site for the University of Illinois College of Medicine in Peoria.

Isaac Tan, MD, is a general internal medicine physician and educator. He is also a team physician for Bradley University Athletics. He is married to Rachel, and his children are Hiram, Judah, and Moriah. He enjoys reading, writing, weightlifting, basketball, and classical music.