Dr. Paul Okunieff is board-certified in therapeutic radiology and is among the pioneers of in-vivo nuclear magnetic resonance imaging of tumors. Dr. Okunieff moved to the University of Florida in 2009 from the University of Rochester School of Medicine and Dentistry, where he served as Philip Rubin Professor in radiation oncology and chair of the department of radiation oncology. Prior to his appointment in Rochester in 1998, Dr. Okunieff served as the branch chief of radiation oncology at the National Cancer Institute and as an assistant professor in radiation oncology at Harvard Medical School between 1988 and 1993. Dr. Okunieff earned his medical degree from Harvard Medical School, where he also completed his postdoctoral fellowship in medicine and a fellowship in radiation medicine at Massachusetts General Hospital. He earned bachelor’s degrees in electrical engineering & computer science, and biological science from Massachusetts Institute of Technology. Dr. Okunieff serves as the radiation oncology chair for the Southwest Oncology Group, and a diplomat of the National Board of Medical Examiners where he serves on national committees overseeing the safety and quality of therapeutic radiation delivery.