Assists the therapists in the treatment of non-Medicare patients, under the therapistsâ direct supervision, including but not limited to the following: retrieving and/or assisting therapists with set up and administration of modalities; setting up exercise machines as necessary for each individual non-Medicare patient; monitoring exercise repetitions/form as requested by the therapists for non-Medicare patients. The Centers for Advanced Orthopaedics LLC (CAO) is one of the nationâs largest Orthopaedics practices, owned and operated by physicians, with over 60 locations across Maryland, Northern Virginia, and the District of Columbia. With approximately 2,000 employees, working in 28 Divisions, CAO is a growing business with revenues of approximately $250 Million.