Greigory grew up in La Grange, IL. His academic journey began at Washington University in St. Louis where he studied economics and biology and competed on the university track team. Here he developed his passion for pediatrics, running with children on the autism spectrum which he has continued to do. He then moved to Madison to the University of Wisconsin for medical school. It was here that he developed a passion for legislative advocacy and an affinity for pediatric cardiology.

Outside of medicine, Greigory is an avid runner, soccer player, novice pickleballer, and comic book enthusiast. He also likes spending time with family and friends, trying new restaurants, and watching the Chicago Bears, Bulls, and White Sox.