General Info

Terence T. Sio, M.D., M.S., is a radiation oncologist at Mayo Clinic Comprehensive Cancer Center in Phoenix, Arizona. Dr. Sio treats brain cancer, brain metastasis, spinal cord tumors, lung cancer, ampullary cancer, stomach cancer, cholangiocarcinoma, colorectal cancer, esophageal cancer, acoustic neuroma, astrocytoma and glioblastoma, with a special emphasis on the use of radiation therapy. He is an expert in proton therapy, intensity-modulated radiation therapy, stereotactic body radiotherapy, brain stereotactic radiosurgery, stereotactic radiosurgery and intraoperative radiation therapy. Dr. Sio is interested in new and innovative ways to improve care for people with cancer. Mayo Clinic is the #1 hospital in Arizona, according to the U.S. News & World Report, and the Cancer Center continually ranks among the top hospitals in the U.S. for Cancer. Mayo Clinic Comprehensive Cancer Center is a National Cancer Institute (NCI)-designated comprehensive cancer center.