Our Physicians

Physicians Listed by Name

The surgeons at OTOR are certified by the American Board of Orthopaedic Surgery, ensuring expertise in the prevention, diagnosis and treatment of musculoskeletal conditions. The physician team at OTOR has a combined experience of more than 100 years providing quality care in East Tennessee. Click a physician’s image to find out more about our team.


C. Daniel Benson, M.D.

James A. Engblom, D.P.M.

Michael A. MacKay, M.D.

Cletus J. McMahon, Jr., M.D.


Michael P. O'Brien, M.D.