Originally from Seattle, WA, Dr. MacTaggart joined OCC-Cornerstone Orthopedics and Sports Medicine in 2019 after completing advanced training in hand and upper extremity surgery. She specializes in the full range of hand, wrist, and elbow conditions and offers the latest treatments, including fracture care, microvascular surgery, nerve decompression, repair or reconstruction, fusions and replacements, bracing, injections, and arthroscopy. Dr. MacTaggart is an active member of the American Academy of Orthopedic Surgery, the American Society for Surgery of the Hand, and the American Academy of Hand Surgery. Prior to working at OCC-Cornerstone, Dr. MacTaggart graduated summa cum laude with a Bachelor of Science degree in biology from Pacific Lutheran University in Tacoma, WA, where she also played on the women’s soccer team. She attended medical school at The University of Washington, graduating magna cum laude and was nominated to the Alpha Omega Alpha medical honors society. After medical school, Dr. MacTaggart completed her residency training at the University of Washington in Seattle, WA. Following residency, she completed a fellowship in hand and upper extremity surgery at The Philadelphia Hand to Shoulder Center/Thomas Jefferson University in Philadelphia, PA. Dr. Mactaggart is rated as an Experienced provider by MediFind in the treatment of Kienbock's Disease. Her top areas of expertise are Tennis Elbow, Rhizarthrosis, Ganglion Cyst, and Carpal Tunnel Syndrome.

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 an Experienced provider by MediFind in the treatment of Kienbock's Disease. His top areas of expertise are Rhizarthrosis, Tennis Elbow, Ganglion Cyst, and Trigger Thumb.

Dr. Robert Leland is a board-certified orthopedic surgeon and dual fellowship trained in foot and ankle reconstructive surgery and orthopedic trauma who has practiced in Colorado since 2001. He is one of Colorado’s most experienced Foot and Ankle surgeons and one of the first in the country to perform ankle replacements. Dr. Leland’s treatment centers on thoroughly educating patients about their condition and treatment options so they can best be involved in the decision-making process. He is a member of the Colorado Medical Society, American Orthopedic Foot and Ankle Society and American Academy of Orthopedic Surgeons. Prior to working with OCC, Dr. Leland graduated from the University of Michigan and Wayne State University School of Medicine. He completed his internship and residency training at Wayne State University/Detroit Medical Center. Dr. Leland completed fellowship training in Foot and Ankle Surgery at Baylor College of Medicine in Houston and Orthopedic Trauma at University Carl Gustav Carus in Dresden, Germany. He subsequently returned to Detroit as Chief of Foot and Ankle Surgery in the Department of Orthopedics at Wayne State University and Chief of Orthopedics at the VA Medical Center where he was twice awarded the Teacher of the Year Award. Dr. Leland currently serves as a clinical assistant professor in the Department of Orthopedics at the University of Colorado and received the Colonel Alan Bucknell Award for Teacher of the Year in 2020. Dr. Leland is rated as an Experienced provider by MediFind in the treatment of Kienbock's Disease. His top areas of expertise are Achilles Tendon Rupture, Poland Syndrome, Multiple Pterygium Syndrome, Amniotic Band Syndrome, and Hip Replacement.

William Stoll is an Orthopedics provider in Golden, Colorado. Dr. Stoll is rated as an Experienced provider by MediFind in the treatment of Kienbock's Disease. His top areas of expertise are Kienbock's Disease and Hip Replacement.

Matthew Paden is a Podiatric Medicine provider in Wheat Ridge, Colorado. Dr. Paden is rated as an Experienced provider by MediFind in the treatment of Kienbock's Disease. His top areas of expertise are Fibromatosis, Plantar Fasciitis, Ledderhose Disease, and Flat Feet.

Derek Johnson is an Orthopedics provider in Denver, Colorado. Dr. Johnson is rated as an Advanced provider by MediFind in the treatment of Kienbock's Disease. His top areas of expertise are Osteoarthritis, Kienbock's Disease, Osteonecrosis, Knee Replacement, and Hip Replacement.

Alexander Lauder is an Orthopedics specialist and a Hand Surgeon in Denver, Colorado. Dr. Lauder is rated as an Experienced provider by MediFind in the treatment of Kienbock's Disease. His top areas of expertise are Mononeuritis Multiplex, Carpal Tunnel Syndrome, Dupuytren Contracture, Nerve Decompression, and Osteotomy. Dr. Lauder is currently accepting new patients.

David Hahn is an Orthopedics provider in Denver, Colorado. Dr. Hahn is rated as an Experienced provider by MediFind in the treatment of Kienbock's Disease. His top areas of expertise are Infectious Arthritis, Kienbock's Disease, Acute Pain, and Osteonecrosis.