Capital Health Cancer Center is a
Partner with OncLive.

Shirnett K. Williamson, MD, DABR

Radiation Oncology
  • Medical Director of Radiation Oncology Services
radiologist dr. shirnett williamson

Dr. Shirnett K. Williamson is the medical director of Radiation Oncology Services at Capital Health. She completed her undergraduate studies at McGill University in Montreal Canada with two bachelors of science degrees in Mathematics and Computer Science and then Anatomy. After receiving her medical degree from Howard University College of Medicine, she completed her internship in Internal Medicine at Franklin Square Hospital in Baltimore and her residency in Radiation Oncology at Thomas Jefferson University Hospital. She served as a clinical assistant professor of Radiation Oncology at the University of Pennsylvania School of Medicine while being employed by Capital Health afterwards between 1996 and 2005. She returned to Penn Radiation Oncology and Capital Health following her development of the Department of Radiation Oncology at the Charlotte Kimelman Cancer Institute in the US Virgin Islands in the Caribbean in 2008. She remained the Medical Director of Radiation Oncology Services at Capital Health overseeing Radiation Oncology, CyberKnife® and Brachytherapy following the separation from the University of Pennsylvania in 2010. She is a former president of the American Cancer Society board of Managers for Mercer County.

In addition to CyberKnife, Dr. Williamson specializes in external beam radiation using intensity modulated radiation therapy (IMRT), (Volumetric modulated arc therapy) VMAT, 3D conformal treatments, high dose rate (HDR) brachytherapy treatments. She is board certified in radiation oncology and even though a general radiation oncologist who treats all sites, she especially likes to treat cancers of the breast, gynecological, neuro and head and neck cancers. She is also the current chair of the cancer committee at Capital Health

Professional Profile

Clinical Location

  • Capital Health Radiation Oncology 1 Capital Way 1st Floor Pennington NJ 08534 609.303.4244609.303.4156


  • Radiation Oncology (Board Certified: 1997) (Recertified: 2007)


  • Medical School - Howard University College of Medicine - Washington, DC
  • Internship - Internal Medicine, Franklin Square Hospital Center - Baltimore, MD
  • Residency - Radiation Oncology, Howard University Hospital - Washington, DC
  • Residency - Radiation Oncology, Thomas Jefferson University Hospitals - Philadelphia, PA