A skilled medical team, led by a Riverside radiation oncologist, will coordinate your treatment during radiation therapy. Your radiation oncologist will oversee your care, prescribe and monitor your treatment plan, address any side effects and ensure that you receive the most effective and safe treatment possible.
Our physicians
Our radiation oncologists see patients in one of our four radiation therapy centers. Your doctor and any of the staff are always available to answer any questions you have about your treatment.
Riverside Medical Group: Radiation oncology specialists

Mark E. Chisam, M.D. (office in Williamsburg)
Lori K. Gillespie, M.D. (office in Gloucester)
C. R. Kersh, M.D. (office in Newport News)
Joseph D. Layser, M.D. (offices in Newport News, Gloucester, & Williamsburg)
Biral Amin, M.D. MBA (office in Newport News)
Jefferson E. C. Moulds, MD (office in Onancock)

Internal Medicine Specialist
Ilene F. Stephan, M.D. (offices in Newport News, Williamsburg & Gloucester)

Riverside radiation oncologists are required to have extensive medical training including:
  • Four years of college
  • Four years of medical school
  • One year of general medical training
  • Four years of residency or specialty training in radiation oncology.
To be board-certified by the American Board of Radiology, a radiation oncologist must pass an extensive exam.