Dr. Erik R. Dorf

John Joseph is a Sports Medicine specialist and an Orthopedics provider in Frisco, Colorado. Dr. Joseph is rated as an Advanced provider by MediFind in the treatment of Distal Median Nerve Dysfunction. His top areas of expertise are Ganglion Cyst, Tendinitis, Tennis Elbow, and Rhizarthrosis.

Randall Viola is a Sports Medicine specialist and an Orthopedics provider in Vail, Colorado. Dr. Viola is rated as an Advanced provider by MediFind in the treatment of Distal Median Nerve Dysfunction. His top areas of expertise are Rhizarthrosis, Ganglion Cyst, Dupuytren Contracture, Osteoarthritis, and Osteotomy.

Originally from Minnesota, Dr. David M. Bierbrauer joined Cornerstone Orthopedics and Sports Medicine, a division of OCC, in 2011. He is a board-certified orthopedic surgeon, whose primary interest is in hand and elbow surgery, as well as a secondary interest in trauma care and sports medicine. Dr. Bierbrauer is an active member of the American Academy of Orthopedic Surgery, American Society for Surgery of the Hand, Western Orthopedic Association, and Colorado State Medical Society. Prior to working at Cornerstone Orthopedics, Dr. Bierbrauer graduated Cum Laude with a Bachelor of Arts Degree in Biology and Chemistry from St. Olaf College in Northfield, MN. He attended The Chicago Medical School at Rosalind Franklin University, where he was a Dean’s Award recipient. After medical school, Dr. Bierbrauer completed his residency at the University of Illinois at Chicago Hospital and his fellowship in Hand and Microvascular Surgery at the Christine M. Kleinert Institute in Louisville, KY. In 2011, he worked at Front Range Orthopedics in Colorado Springs from 2005-2011. As the official US Ski Team Physician, he has had the opportunity to travel internationally to France and Canada. Dr. Bierbrauer is rated as a Distinguished provider by MediFind in the treatment of Distal Median Nerve Dysfunction. His top areas of expertise are Rhizarthrosis, Tennis Elbow, Ganglion Cyst, and Trigger Thumb.