John H. Velyvis, MD, is an orthopedic surgeon at the Coon Joint Replacement Institute in St. Helena, CA. His areas of specialty include total knee replacement, total hip replacement surgery and arthroscopic knee surgery.

Dr. Velyvis specializes in minimally invasive surgery in the hip and knee, and has lectured and published extensively on this topic within the field of orthopedics. He helped pioneer a minimally invasive hip replacement surgical technique which is now widely used, and has experience with the MAKOplasty robotic knee replacement.