Dr. Otis Gaddis is a medical oncology specialist in Moreno Valley, California and he works at Arrowhead Regional Medical Center. He got his diploma from University of California Davis School of Medicine and did his residency in General Surgery at City of Hope National Medical Center and Obstetrics and Gynecology at the University of Southern California - LAC+USC Medical Center. Dr. Otis Gaddis also completed a fellowship in Medical Oncology at California Hospital Medical Center. The doctor is certified in Gynecologic Oncology, Obstetrics & Gynecology and has an experience of more than 20 years.