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Beginning May 1, Dr. Purchase will assume full time practice as the Medical Director of Shoulder Surgery at the Saint Francis Orthopedic Institute in San Francisco. Please call 415-353-6380 for an appointment.


Robert Purchase, MD is an orthopedic surgeon in San Francisco, CA specializing in surgery of the shoulder and knee.

Dr. Purchase is board certified in orthopedic surgery and was trained by some of the very best in shoulder and knee surgery. In addition to completing a residency in orthopedic surgery and a postdoctoral fellowship in sports medicine, he has devoted his career to the care and treatment of all shoulder and knee problems. For those Bay Area patients who are seeking great care and treatment, Dr. Purchase utilizes minimally invasive techniques to treat rotator cuffs, shoulder dislocations, meniscus tears, ACL injuries, and many more. He performs total joint replacements of the shoulder and knee including the less invasive partial replacements.

Dr. Purchase practices at the Saint Francis Orthopedic Institute. Perched near the top of Nob Hill in beautiful San Francisco, the Saint Francis Orthopedic Institute is a collaboration of Surgeons, Hospitalists, Nurses, and Therapists with the common goal of excellence in musculoskeletal care.

Watch our videos

Learn about Purchase Orthopedic Clinic by watching these videos.

  • Introduction
  • First Visit
  • Testimonials
See all videos

What our patients say

Here is what paitents are saying about Dr. Purchase.

  • Dr. Purchase is the real deal...he is the most down to earth doctor I’ve ever had, and 5 months later, my clavicle scar is barely noticeable.

    A.T., Clavicle Injury

  • I was referred to Dr. Purchase after a catastrophic knee dislocation suffered while skiing at Heavenly...I was lucky to be wearing a helmet. And even luckier to have him on my team. His approach is equal measures methodical and personal. He's an empathetic, intuitive perfectionist who knows his stuff.

    R.O., Knee Injury

  • ...what impressed me as much as his surgical and medical skills was the caring, intelligent and warm human being Dr. Purchase is. He reminded me of the best doctors I met growing up in the '50s, who once upon a time treated all of their patients as if the clock stood still and they were family or friends.

    R.L., Patient