Mid-Rivers Cancer Center is a Fredericksburg-based medical practice offering a diagnostic and management services for the treatment of cancer. Housed in a state of the art facility, Mid-Rivers Cancer Center offers advanced equipment including a computerized tomography (CT) simulator and a megavoltage linear accelerator. Mid-Rivers Cancer Center is headed up by Dr. Christopher Walsh, a radiation oncologist who obtained his M.D. from the State University of New York, Buffalo.