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About This Location

South County
South County Lobby

South County
South County Treatment Room

The Siteman Cancer Center's newest facility, a  37,000-square-foot complex, is located in south St. Louis County at Interstate 55 and Butler Hill Road.

The Washington University medical oncologists, radiation oncologists and surgeons who staff the south county facility also practice at Siteman's main campus in St. Louis and collaborate regularly with other Siteman and Washington University physicians. (Click here to see a full list.) These doctors provide multidisciplinary care, allowing patients to see as many as three physicians in one trip and have their entire treatment plan determined in one visit.

Bruce Roth, MD, is the director of medical oncology, and Hiram Gay, MD, is the director of radiation oncology.

The staff also includes registered nurses with specialized training in caring for cancer patients. A research coordinator is also available to talk with patients about possible participation in clinical trials, which provide access to new medications and treatments not available at most cancer centers.

Services offered at the south county facility include:

  • Physician care
  • Chemotherapy treatment
  • Radiation therapy
  • On-site laboratory services
  • Retail pharmacy services
  • Support programs and materials


The new facility offers wireless Internet access, ample parking adjacent to the building and a covered drop-off area. At about 16 acres, the building site provides green space for patients and families to enjoy, including land set aside for a future healing garden.

Click here to watch a slideshow detailing the construction of the facility.