Brent G. Yeung, MD

Dr. Tyler R. Johnston is UCI Health orthopaedic surgeon who is fellowship trained in both sports medicine and shoulder surgery. He specializes in the treatment of sports-related musculoskeletal injuries of the upper and lower extremities. His clinical expertise includes arthroscopic reconstructive techniques for the ACL, meniscus and other ligaments, as well as rotator cuff repair, complex shoulder replacement and shoulder instability. Johnston earned his medical degree at Stanford University in Palo Alto, Calif., followed by a residency in orthopaedic surgery at Stanford Hospital. He completed a fellowship in sports medicine and shoulder surgery at Duke University School of Medicine in Durham, N.C. While at Duke, he served as an assistant team physician for the university's basketball, baseball, football and wrestling teams, as well as the North Carolina Central University football team. Next, he completed an international AO Foundation trauma fellowship in Madrid, Spain, and a shoulder surgery fellowship in Nice, France, with internationally regarded orthopaedic trauma surgeon Dr. Pascal Boileau, developer of several surgical devices and arthroscopy techniques. He is the author of numerous manuscripts in peer-reviewed orthopaedics and sports medicine journals. Having earned a master's degree in mechanical engineering at Stanford University, he also maintains academic interests in biomechanics, surgical decision-making and technique development, as well as clinical outcomes research. He is an invited lecturer on these topics both nationally and internationally. Johnston, who also speaks Spanish.

Dr. Claire Henchcliffe is a board-certified UCI Health neurologist who specializes in the diagnosis and treatment of movement disorders. She has more than 20 years of experience treating patients with Parkinson’s disease and related conditions. She earned her medical degree at the College of Physicians and Surgeons of Columbia University in New York City. She completed an internal medicine internship and neurology residency at New York Presbyterian Hospital/Columbia University Medical Center, followed by a movement disorders fellowship at Columbia University Medical Center. She previously earned a doctorate in philosophy from the University of Oxford in the United Kingdom and completed a postdoctoral fellowship in genetics at the University of Cambridge and UC Berkeley. Prior to becoming chair of the UCI School of Medicine's Department of Neurology, Henchcliffe served as Weill Cornell Medicine's vice-chair for clinical neurology research and chief of neurodegenerative disorders, and as the attending neurologist at New York Presbyterian Hospital, both in New York City. An internationally recognized clinician and scientist in neurological disorders, Henchcliffe's research is focused on developing new treatments for Parkinson’s disease, including stem cell-based regenerative therapy and gene therapy. At Weill Cornell Medicine, she led a clinical trials network team as part of the National Institute of Neurological Disorders and Stroke (NINDS) initiative to improve treatment for neurological diseases in partnership with academia, private foundations and industry. She has published in many peer-reviewed journals and has made presentations at national and international conferences on Parkinson’s disease and, most recently, on stem-cell therapies and biomarker development.