Dr. John Diana, M.D.

Orthopedic Surgery

Dr. John Diana is a board-certified orthopedic surgeon practicing in Napa, California. In 2023, Dr. Diana performed 208 Medicare-verified knee replacements (#8 in California) and 118 hip replacements (#16 in California), for a combined total of 326 procedures. This places Dr. Diana among the highest-volume joint replacement surgeons in California.

Verified Medicare Cases (2023)

Knee Replacement
208 verified cases
#8 in California
Hip Replacement
118 verified cases
#16 in California

Verified Case Volume Trends (2013-2024)

Questions to Ask Dr. Diana

This surgeon has high Medicare volume (326 verified cases). This indicates significant experience.

Recommended Script:

"Dr. Diana, since you handle such high volume, what is your specific infection rate compared to the national average? Do you have a dedicated team for post-op recovery?"

Preparing for Surgery?

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Contact & Location

📞 Phone: 707-254-7117
3273 Claremont Way
Napa, CA 94558
NPI: 1649297540
Credentials: M.D.
✅ Active Medicare provider (NPI verified)
📅 20 years of practice experience
🎓 Licensed M.D.
🏥 Licensed surgical specialist
🦴 Board-certified orthopedic surgeon
📞 Contact information available

Other Top California Orthopedic Surgeons

Dr. Alexander Sah - Fremont 844 procedures
Dr. Andrew Yun - Beverly Hills 691 procedures
Dr. John Dearborn - Menlo Park 515 procedures
Dr. Erik Schnaser - Rancho Mirage 427 procedures

Browse California by Procedure

Hip Replacement Surgeons Knee Replacement Surgeons Shoulder Replacement Surgeons
Important: Rankings are based solely on Medicare procedure volume and do not reflect quality of care, patient outcomes, or procedures covered by private insurance. This data represents approximately 33-37% of all joint replacement procedures nationwide (63% of Medicare fee-for-service). Always consult with healthcare providers to make informed decisions about your care.
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