School of Medicine
Showing 101-110 of 110 Results
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Stephen R. Viess, MD
Clinical Assistant Professor, Orthopaedic Surgery
BioDr. Viess is a board-certified orthopaedic surgeon with subspecialty board certification in sports medicine.He delivers care at Stanford Health Care – ValleyCare in Pleasanton. Dr. Viess focuses on arthroscopic surgery and sports medicine, with a special interest in arthroscopic reconstruction of the shoulder and knee.
Topics include the biomechanics of pitching, and shoulder and elbow injuries in the throwing athlete. Dr. Viess is a fellow of the American Academy of Orthopaedic Surgery and a member of the California Orthopaedic Association.
He strives to offer his patients the most advanced, least invasive surgical procedures, including ACL reconstruction, meniscal surgery, and arthroscopic rotator cuff and labral repairs. Dr. Viess has extensive experience in the management and treatment of sports- related orthopedic injuries. He served as Assistant Team Physician
for Major League Baseball’s Oakland As, providing game coverage and conducting pre- and post-season physical exams. For six years, Dr. Viess directed the Stanford Health Care – ValleyCare Sports Medicine Program. He also served as the team physician for Granada High School in Livermore, California.
In addition to his clinical practice, Dr. Viess has conducted research, including a 10-year review of clinical satisfaction, revision rates, and radiographic evidence of stem fixation associated with the Ultimate-C femoral stem. He also led a study evaluating capsular sling repair during total hip arthroplasty.
Dr. Viess has made numerous presentations to peers and to the community. Peer-targeted topics include graft selection in ACL reconstruction, concussion
management, and on-field management of spine injuries. At the Lake Tahoe Sports Medicine Conference, he has presented lectures on PCL ruptures, multi-ligament knee injuries, and AC joint sprains. He also has delivered lectures for family practitioners on the evaluation and physical examination
of orthopaedic patients. For the community, Dr. Viess has made presentations at health fairs and schools. Topics include the biomechanics of pitching, and shoulder and elbow injuries in the throwing athlete.
Dr. Viess is a fellow of the American Academy of Orthopaedic Surgery and a member of the California Orthopaedic Association. -
Grace Xiong, MD
Assistant Professor of Orthopaedic Surgery
Current Research and Scholarly InterestsDr. Xiong’s research is focused on improving the care and management of patients with subacute and chronic spinal cord injury, improving clinical outcomes in spinal surgery, and improving health access to spinal care.
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Fan Yang
Associate Professor of Orthopaedic Surgery and of Bioengineering
Current Research and Scholarly InterestsOur lab’s mission is to develop therapies for regenerating human tissues lost due to diseases or aging, and to build tissue engineered 3D models for understanding disease progression and informing drug discovery. We invent biomaterials and engineering tools to elucidate and modulate biology, and also use biology to inform materials and engineering design. Our work is highly interdisciplinary, and is driven by unmet clinical needs or key gaps in biology.
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Yunzhi Peter Yang
Professor of Orthopaedic Surgery and, by courtesy, of Materials Science and Engineering and of Bioengineering
On Partial Leave from 12/01/2025 To 05/31/2026Current Research and Scholarly InterestsThe Yang Lab focuses on next-generation solutions at the intersection of 3D printing, regenerative medicine, modular tissue engineering, biomaterials, and medical device innovation. Our research focuses on engineering dynamic, biomimetic microenvironments that promote cell growth, tissue regeneration, and functional restoration. We develop transformative technologies to treat a broad spectrum of musculoskeletal conditions—including multi-tissue healing challenges and complex traumatic injuries.
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Jeffrey Yao, MD
Professor of Orthopaedic Surgery and, by courtesy, of Surgery (Plastic and Reconstructive Surgery)
Current Research and Scholarly Interests1. Minimally invasive and arthroscopic treatment alternatives for common hand and wrist disorders
2. Biologic augmentation of tendon repair strategies utilizing stem cells
