On average, patients gave him a rating of 4.5 stars out of 5. Dr. Villarreal is an in-network provider for Land of Lincoln, AARP, and Anthem, as well as other insurance carriers. He studied medicine at the University of Monterrey Faculty of Medicine. For his residency, Dr. Villarreal trained at Michael Reese Hospital and a hospital affiliated with St. Louis University (SLU). His hospital/clinic affiliations include Missouri Baptist Medical Center, SSM Health St. Mary's Hospital - St. Louis, and Gateway Regional Medical Center.