Clinical services are provided by department physicians and physics faculty exclusively at the main campus of the Alvin J. Siteman Cancer Center at Barnes-Jewish Hospital and Washington University School of Medicine, and six satellite locations, including the Siteman Cancer Center – South County, Siteman Cancer Center at Barnes-Jewish West County Hospital, Siteman Cancer Center at Northwest HealthCare, Siteman Cancer Center at Barnes-Jewish St. Peters Hospital, Siteman Cancer Center at Memorial Hospital East and Alton Memorial Hospital.