Contact a Joint Care Specialist

Experience counts. Technology matters. Personalized care is essential.

With offices in Napa, Sonoma, Vallejo and St. Helena, we serve the entire Napa Valley – and well beyond.

For more information and to schedule an appointment with Dr. John Diana or
Dr. Michael Shifflett, please call the Napa Valley Joint Replacement Center at
(707) 254-7117. Our experienced staff will be glad to help you.

3273 Claremont Way, Suite 100
Napa, CA 94558
(Behind Safeway Shopping Center)

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For information on the Napa Valley and what makes it a ‘top ten’ destination for world travelers, please visit

Napa hip and knee joint care


I was referred to Dr. Shifflett to treat my shoulder several years ago. As I progressed with that treatment, I started talking to him about my hip. Initially, Dr Shifflett prescribed a course of physical therapy which helped me manage the hip pain, and make adjustments in the way I moved to put less stress on my hip. It worked for a while and enabled me to put-off surgery until I felt ready.

I like to stay pretty active so hip replacement was inevitable to return me to all my daily activities. Dr. Shifflett predicted about a 6 week “complete” recovery and I beat that by actively participating in physical therapy – both right after surgery, and continuing at Synergy (the Queen) until I had regained full mobility. Today I’m pain-free with no hip issues, and I attribute that to Dr. Shifflett’s surgical skills and his focus on me as an individual, involving me in my treatment program to produce the best results.”

Peter Darm, Napa
Total Hip Replacement