Christopher Pham, DO Christopher Pham, DO, is a sleep medicine physician with AHN Medicine Institute. He is skilled at diagnosing and treating patients with a variety of disorders, including sleep disordered breathing, restless leg syndrome, insomnia, narcolepsy, hypersomnia, parasomnia, circadian rhythm disorder, and sleep-related movement disorder. Dr. Pham went to medical school at Lake Erie College of Osteopathic Medicine in Erie, Pennsylvania. He did his residency at Martin Army Community Hospital in Fort Benning, Georgia and his fellowship in sleep medicine at Walter Reed National Military Medical Center in Bethesda, Maryland. He is certified by the American Board of Family Medicine in Sleep Medicine. Dr. Pham served in the military where he was a field surgeon, until he was honorably discharged in 2020. He sees patients ages 18 and older.