Dr. John Mayer is a board-certified orthopedic surgeon practicing in Gurnee, Illinois. In 2023, Dr. Mayer performed 11 Medicare-verified knee replacements, ranking #252 in Illinois. Procedure counts are based on Medicare fee-for-service data for 2023.
Verified Medicare Cases (2023)
Knee Replacement
11 verified cases
Verified Case Volume Trends (2013-2024)
Questions to Ask Dr. Mayer
Medicare volume represents only a portion of a surgeon's practice.
Recommended Script:
"Dr. Mayer, I see your Medicare volume is lower—what percentage of your practice is private insurance or sports medicine? Approximately how many total joint replacements do you perform annually?"
Preparing for Surgery?
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📞 Phone: 847-623-3090
105 N Greenleaf St
Gurnee, IL 60031
Gurnee, IL 60031
NPI: 1194716985
Credentials: MD
✅ Active Medicare provider (NPI verified)
📅 21 years of practice experience
🎓 Licensed MD
🏥 Licensed surgical specialist
🦴 Board-certified orthopedic surgeon
📞 Contact information available
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.