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 four satellite locations, including the Siteman Cancer Center – South County, Siteman Cancer Center at Barnes-Jewish West County Hospital, Siteman Cancer Center at Christian Hospital and Alton Memorial Hospital. Department physician faculty also provide part-time support at Siteman Cancer Center at Barnes-Jewish St. Peters Hospital.