Even in this time of uncertainty, Mayo Clinic is a place for hope and healing — and we're committed to delivering the care you need. With options for face-to-face, virtual visits or phone appointments in adherence with federal and state executive orders and guidance. Thomas B. Daniels, M.D., is a radiation oncologist at Mayo Clinic's campus in Phoenix, Arizona. Dr. Daniel's specialties include novel cancer treatment options including proton therapy. Dr. Daniels' clinical practice and research are focused on finding precise and individualized approaches to pediatric cancer patients. At Mayo Clinic Arizona, much success has been seen with radiation therapy options that stem from innovative treatments such as proton beam therapy and stereotactic radiosurgery. As a result, Mayo Clinic continues to constantly look to improve patient reported outcomes. U.S. News & World Report consistently ranks Mayo Clinic among the top hospitals for cancer in the nation.