Email: [email protected] Oak Tree Orthopedics is a private practice based in the Inland Empire & Orange County, California. Centered around the patient journey, Oak Tree Orthopedics strives to provide patients and their families with unsurpassed personalized care, delivered by Harvard-trained orthopedic surgeon, Dr. Nasser Heyrani. His motivation to start a private practice with individualized care for patients came from his years at major hospital groups across the East and West Coasts. With the evolution of the healthcare industry — a shift from personal to business-centric. read full review »