Dr. Pericles Ioannides is a board-certified radiation oncologist based in Sonora, California, affiliated with Adventist Health Sonora . He specializes in utilizing advanced radiation technologies and radiosurgery to treat various cancers. Dr. Ioannides completed his residency at the University of California, Irvine, after a preliminary internal medicine residency at the Medical College of Wisconsin and earned his medical degree from Indiana University School of Medicine and has a B.S. in Neuroscience as well as a certificate in nutrition from Stanford University. His research contributions include publications on proton therapy, lung cancer, salivary cancers, complementary and alternative medicines and prostate cancer.