Dr. John E. Tobey

Dr. Efren Caballes joined Cornerstone Orthopedics & Sports Medicine, a division of OCC, in 2016. He takes a comprehensive approach to musculoskeletal care, incorporating exercise, physical modalities, bracing, injections, and regenerative medicine. He has a special interest in diagnostic and therapeutic musculoskeletal ultrasound and focuses on aligning treatment with each patient’s recovery needs and goals. Dr. Caballes earned a Bachelor of Science in Molecular Cellular Biology from the University of Illinois at Urbana-Champaign and a medical degree from Touro College of Osteopathic Medicine in New York City. He completed his residency in Physical Medicine and Rehabilitation at NYU Medical Center, where he served as Chief Resident, followed by a Sports Medicine Fellowship at NYU. His training included working with endurance athletes at the NYU Running Performance Lab and artists at the Juilliard School and Harkness Center for Dance Injuries. While in New York, he developed a passion for running, joining the Prospect Park Track Club and volunteering with Back on My Feet. In Colorado, he continues to care for runners and triathletes at all levels, from recreational to Olympic athletes. He is a Level 1 certified USA Track and Field coach and was selected to serve as a volunteer physician for the U.S. Olympic & Paralympic Committee in 2020. He also teaches sports ultrasound nationally and serves as a clinical instructor for multiple medical programs. Dr. Caballes is rated as an Advanced provider by MediFind in the treatment of Tennis Elbow. His top areas of expertise are Tendinitis, Bursitis, Tennis Elbow, and Plantar Fasciitis.

Matthew Gnirke is a Physiatrist and a Sports Medicine provider in Frisco, Colorado. Dr. Gnirke is rated as an Advanced provider by MediFind in the treatment of Tennis Elbow. His top areas of expertise are Spinal Stenosis, Invertebral Disc Disease, Cervical Spondylosis, and Tendinitis. Dr. Gnirke is currently accepting new patients.

Katherine Payne is a Physiatrist in Aurora, Colorado. Dr. Payne is rated as an Advanced provider by MediFind in the treatment of Tennis Elbow. Her top areas of expertise are Lymphedema, Lymphangiectasis, Primary Intestinal Lymphangiectasia, and Meige Disease. Dr. Payne is currently accepting new patients.