Cornell University Hospital for Animals


About Us

Kei  Hayashi, DVM, PhD, DACVS

  • Kei Hayashi, DVM, PhD, DACVS
  • Title: Associate Professor of Surgery
  • Phone: 607-253-3060
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Dr. Kei Hayashi is a veterinary surgeon and an orthopedic scientist who has just been recruited to Cornell's College of Veterinary Medicine. He graduated from the University of Tokyo with BVMS/DVM/PhD degrees (1993-1997), and then obtained MS and PhD degrees at the University of Wisconsin (1997).  He completed a small animal surgery residency at the University of Wisconsin (2003) and became a Diplomate of the American College of Veterinary Surgeons, ACVS). He served as an assistant professor of small animal orthopedic surgery at the Michigan State University (2003-2005) then moved to UC Davis and was tenured in 2012. He began his appointment at Cornell in February 2013. Dr. Hayashi serves as a member of advisory board of the Asian Society of Veterinary Surgery (AiSVS), the Japanese College of Veterinary Surgeons (JCVS), and the Asian Board of Veterinary Specialties (AiBVS).

Dr. Hayashi has published more than 100 articles in the area of orthopedic research. His research focus is in pathology of ligament/tendon injury and wound healing, evaluation of total joint replacement systems, molecular profiling of osteoarthritis, and comparative orthopedics and sports medicine. His clinical interests are in arthroscopy, total joint arthroplasty, biological approach to joint surgery, minimally invasive fracture treatment, and application of novel research discoveries (such as stem cell and regenerative medicine technologies) to clinical patients.