California Sports and Orthopedic Institute is a private medical group of orthopedic surgeons and physical therapists. The practice consists of Robert Eppley, M.D., Gaye DeRusso, PA-C, Brad Zwahlen, M.D, Nasreen Taymuree, PA-C, Chad Roghair, M.D. and Nancy E. Rolnik, M.D.
The doctors and therapists specialize in sports medicine, joint resurfacing, complete shoulder and knee replacements, knee disorders and ACL surgery.