Safia K. Ahmed, M.D., is a radiation oncologist at Mayo Clinic Comprehensive Cancer Center in Phoenix, Arizona. Dr. Ahmed treats pediatric central nervous system tumors, soft tissue sarcoma, bone sarcoma and breast cancer, with a special emphasis on the use of radiation therapy. She is an expert in proton therapy, intensity-modulated radiation therapy, brachytherapy, stereotactic radiosurgery and intraoperative radiation therapy. Dr. Ahmed focuses on the best treatment for your unique cancer while optimizing your quality of life. 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.