Dr. Gary Koenig graduated from the Saint Louis University School of Medicine in 1985. He works in Hazelwood, MO and 1 other location and specializes in Gastroenterology. Dr. Koenig is affiliated with Christian Hospital, SSM DePaul Health Center and SSM Saint Marys Health Center.
Medical School: Saint Louis University School of Medicine; Graduated 1985
*This physician has multiple office locations. See Office Information for details.