After graduating from medical school, Dr. Davidian completed an internship at Florida Hospital and an ophthalmology residency at White Memorial Hospital in Los Angeles. Following residency, he did an informal ophthalmic plastic surgery fellowship in Los Angeles. Dr. Davidian has practiced as a staff physician and emergency department physician in numerous locations and was surgically active until 2018. He also worked in private practice as a general ophthalmologist from 1988 to 2007. He has held multiple society memberships and various leadership positions throughout his career. He officially retired at the end of 2019.
Dr. Davidian has made many contributions to medical education and medical missionary pursuits. He is the founder and president of Adventist International Eye Services, which is a non-profit corporation benefiting eye care programs in Mexico, Africa, and Madagascar. He and his wife, Jeanne Ann, reside in Central Point, Oregon, and they have two daughters, Lauri Anne and Janna Lynne.