Dr. Gary Lee Gerstner, MD

Dr. Gary Gerstner specializes in gastroenterology and internal medicine, bringing more than five decades of medical expertise to patient care. He earned his medical degree from the University of Wisconsin School of Medicine & Public Health and completed his residency at the Medical College of Wisconsin. With 54 years of experience treating digestive health conditions, Dr. Gerstner serves patients who speak both English and Spanish.

Dr. Gerstner practices at multiple locations throughout Wisconsin, including Franklin, Mount Pleasant, and Waukesha. He is affiliated with HSHS Saint Clare Memorial Hospital and provides care through various Ascension Medical Group locations. His clinical focus includes treating ulcerative colitis, acid reflux, and GERD. Patients have given him an average rating of 3.3 out of 5 on Vitals.