Frederick Willison was born in Fairfax, Virginia. He completed his undergraduate work at James Madison University before attending the Medical College of Virginia, where he graduated first in his class. After an internship in internal medicine in San Francisco, he did his residency training in Radiation Oncology at the National Cancer Institute in Bethesda, Maryland. He stayed on at the NCI as the radiation oncology residency program co-director prior to coming to Tulsa.

Dr. Willison joined St. John Medical Center in Tulsa in 1997 and later became Medical Director of Radiation Oncology and Cyberknife Robotic Radiosurgery, where he personally managed thousands of radiosurgical procedures.

He is board-certified by the American Board of Radiology in radiation oncology and is a member of the American College of Radiology, the American Society for Therapeutic Radiology and Oncology, the Radiosurgery Society, and served on the board of directors of the Oklahoma Society of Clinical Oncology from 2013-2015.

Dr. Willison is also a veteran of the United States Army. He served as the chief of the radiation oncology division at Walter Reed Army Medical Center in Washington, D.C. He received a commendation for his meritorious service during the first Gulf War, when he served on the U. S. Army’s advisory task force for nuclear, biological, and chemical emergencies.