Improving Mobility & Eliminating Pain

Dr. Justin Greisberg of Columbia Orthopedics examines a patient's ankle

Foot and Ankle

The team of foot and ankle specialists at Columbia Orthopedics provides operative and non-operative treatment for all manner of foot and ankle conditions, from common injuries to complex bone and joint disorders. Whether you need non-operative treatment to heal an injury, orthotics or braces to support a chronic condition, or require specialized surgical care, our team is here to help restore your mobility and eliminate your pain.

For information about pediatric foot deformity, visit here.

Choosing Columbia

Compassionate patient-centered care has been at the core of our mission for more than 150 years. Learn more about Columbia Orthopedics' personalized approach to foot and ankle care.



  • Bonnie Y. Chien, MD

    • Orthopedic Surgeon


    Bonnie Y. Chien, MD, is an orthopedic surgeon specializing in operative and non-operative treatment of foot and ankle conditions from young adolescent to adult patients. Dr. Chien's expertise focuses on refined surgical techniques that address various foot, ankle, heel, and toe conditions. Her practice leverages minimally invasive techniques ranging from foot and ankle reconstruction to bunion corrections.

    Dr. Chien grew up in Taipei, Taiwan, and earned her undergraduate and medical degrees at Stanford University. She completed her Orthopedic Surgery residency at Harvard, where she served in numerous education leadership roles both in residency and on a national level. Dr. Chien received the Resident Executive Committee Award from the Harvard Combined Orthopaedic Residency Program (HCORP) and completed her orthopedic subspecialty fellowship in foot and ankle at the Institute for Foot and Ankle Reconstruction at Mercy Medical Center in Baltimore, Maryland.


    In addition to her clinical practice, Dr. Chien is active in academic research, publishing many articles, abstracts, and book chapters on ankle fractures, the management of diabetic feet, infection prevention, and total ankle replacement. As more advanced techniques in reconstruction evolve, she hopes to focus on studying if newer technologies, such as advances in implants, make a difference and are cost-effective. Dr. Chien is an active member of the American Orthopedic Foot and Ankle Society (AOFAS), the Ruth Jackson Orthopedic Society (RJOS), the American Academy of Orthopedic Surgeons (AAOS), the American Medical Association (AMA), and serves as a representative for the Health Policy Committee.


    Dr. Chien enjoys global exchange in orthopedic foot and surgery and has traveled internationally to Colombia, Malawi, and India to teach and perform surgeries. Dr. Chien speaks conversational Spanish and is fluent in Chinese in addition to English. With her upbringing abroad and exposure to other parts of the world, she is passionate about learning different cultures and languages and connecting with a diverse patient population in and around New York.


  • Justin Greisberg, MD

    • Orthopedic Surgeon

    Justin K. Greisberg, MD, is an orthopedic surgeon specializing in foot and ankle reconstruction and complex musculoskeletal trauma. Dr. Greisberg is Chief of Foot & Ankle Orthopedics, Chief of Orthopedic Trauma, at NewYork-Presbyterian-Lawrence Division, and Professor of Orthopedic Surgery, Columbia University.  Dr. Greisberg is an expert on complex reconstructive surgeries, limb realignment, diabetic reconstruction, Achilles tendon injuries, stress fractures, and total ankle replacement. His practice leverages advanced minimally invasive arthroscopic techniques, combined with the latest medications, braces, and orthotics to ensure accelerated recovery times.

    Following medical school and residency training, Dr. Greisberg completed advanced fellowship training in both foot and ankle surgery and orthopedic trauma. As chief of the foot and ankle service at Columbia University Irving Medical Center, Dr. Greisberg's practice – based in Manhattan and Westchester County – is supported by the full resources of the NewYork-Presbyterian Hospital system, and he frequently receives emergency trauma cases from across the region.

    In addition to his clinical practice, Dr. Greisberg is also a highly respected scholar who is conducting several research trials on foot and ankle procedures and trauma surgery. He co-authored a textbook, Core Knowledge in Orthopedics: Foot and Ankle, and numerous peer-reviewed articles that have appeared in professional medical journals. Dr. Greisberg is actively involved in the education of medical students and orthopedic residents and is frequently invited to lecture on complex problems of the foot and ankle at major medical conferences.