Radiation Oncologists
Shirnett Williamson, MD
Medical Director of Radiation Oncology and CyberKnife®

Dr. Shirnett Williamson is the medical director of Radiation Oncology and CyberKnife® at Capital Health. 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 returned to Penn Radiation Oncology following her development of the Department of Radiation Oncology at the Charlotte Kimelman Cancer Institute in the Caribbean. She served as an assistant clinical professor of Radiation Oncology at the University of Pennsylvania School of Medicine prior to joining Capital Health. In addition to CyberKnife, Dr. Williamson specializes in external radiation using IMRT, 3D conformal treatments, HDR treatments and prostate seed implementation. She is board certified in Radiation Oncology.
Jorge E. Freire, MD, FCPP
Medical Director of CyberKnife® Programs

Dr. Jorge E. Freire is a staff radiation oncologist and medical director of CyberKnife® Programs in the Radiation Oncology Department at Capital Health.
Dr. Freire was a clinical associate professor in the Department of Radiation Oncology at Drexel University College of Medicine, Hahnemann University Hospital in Philadelphia, PA.
He is the author of several textbook chapters and multiple scientific publications. He is also a well-known expert in the treatment of ocular and orbital tumors using brachytherapy, radiotherapy and CyberKnife radiosurgery as well as the treatment of brain, lung, liver, prostate, and other tumors. His experience also includes low and high dose brachytherapy to treat prostate cancer.
Dr. Freire is a graduate of Universidad Central del Ecuador. He completed his internship at Mount Sinai School of Medicine in NYC and his residency at McGill University, University of Ottawa and one year of fellowship at the University of Manitoba, Canada. He is fluent in Spanish.