Winchester is located about one hour from Dulles International Airport and 90 minutes from Washington, D.C. Our main office is located less than one mile from Winchester Medical Center, a Level II trauma center affiliated with Valley Health System, which offers a broad spectrum of diagnostic, medical, surgical, and rehabilitative services. The Centers for Advanced Orthopaedics LLC (CAO) is one of the nation’s largest Orthopaedics practices, owned and operated by physicians, with over 60 locations across Maryland, Northern Virginia, and the District of Columbia.