Bio

Dr. An is a fellowship-trained orthopaedic surgeon specializing in foot and ankle surgery. She provides care at Stanford Health Care locations in Emeryville and Pleasanton.

Her practice focuses on the diagnosis and treatment, both nonsurgical and surgical, of foot and ankle conditions, including sports injuries, flatfoot deformity, and ankle arthritis. Working with world-class experts at the Hospital for Specialty Surgery, Dr. An is trained in the latest techniques and technologies, ranging from cartilage repair, minimally invasive bunion correction, to total ankle replacement.

Dr. An is passionate about practicing evidence-based medicine and pursuing research to advance the field of foot and ankle surgery. She works as part of a team with other orthopedic specialists, neurologists, physiatrists, and therapists to help patients achieve the best clinical outcomes. Dr. An believes in understanding each individual’s circumstances and goals to create a personalized care plan. When surgery is deemed the best option, Dr. An guides her patients through every step of getting back on their feet.

Dr. An has been involved in extensive research studying clinical outcomes after surgical correction of foot deformities caused by Charcot-Marie-Tooth disease, a hereditary condition that results in weaker and smaller muscles. Her work has appeared in several peer-reviewed scientific journals, including Foot & Ankle International and the Journal of Foot and Ankle Surgery, among others. She has also written textbook chapters on flatfoot and bunion surgical techniques, metatarsalgia (pain in the ball of the foot), and Lisfranc (midfoot) injuries.

Dr. An is a licensed physician in California and New York. She is a member of the Western Orthopaedic Association, American Orthopaedic Foot and Ankle Society (AOFAS), American Academy of Orthopedic Surgeons, and the American Medical Association. She advocates for diversity in the field of medicine and has served organizations such as the Committee on Inclusion, Equity and Advancement and Women in Orthopaedics Outreach Group at her prior institution.

Clinical Focus

  • Foot and Ankle Surgery

Academic Appointments

Professional Education

  • Board Certification: American Board of Orthopaedic Surgery, Orthopaedic Surgery (2024)
  • Fellowship: Hospital for Special Surgery Orthopaedic Surgery Residency (2022) NY
  • Residency: Cedars Sinai Orthopaedic Surgery Residency (2021) CA United States of America
  • Medical Education: Washington University School Of Medicine Registrar (2016) MO

Contact

  • Academic
    tonyaan@stanford.edu
    University - Academic staff Department: Orthopaedic Surgery Position: Clinical Assistant Professor
  • Clinical (Primary)  Stanford Orthopedic Surgery at Pleasanton 5725 W Las Positas Blvd Ste 200 Pleasanton, CA 94588 (925) 263-5700 (fax)

Additional Clinical Info

Additional Info

  • Mail Code: 6342

All Publications

  • Orthotic Devices for the Foot and Ankle. The Journal of the American Academy of Orthopaedic Surgeons An, T. W., Berke, G., Beattie, W., Chan, J. Y. 2023

    Abstract

    Millions of Americans wear ankle-foot orthotic devices for protection, pain relief, and deformity correction. Inquiries about off-the-shelf and custom devices are a common reason for evaluation with a foot and ankle surgeon or general orthopaedic surgeon. Despite limited high-quality evidence for their use, these devices can have a notable clinical impact on physical function. An up-to-date understanding of orthotic device options and their appropriate use in managing musculoskeletal pathologies applies to all orthopaedic providers. This review aims to categorize orthosis types and provide specific device recommendations for common adult conditions such as flatfoot, cavovarus foot, and ankle instability. Collaboration with a certified orthotist can help patients achieve functional and recreational goals with the use of appropriately designed and applied orthoses.

    View details for DOI 10.5435/JAAOS-D-23-00832

    View details for PubMedID 38109744