Dr. Stephen Koss, MD

Orthopedic Surgery

Dr. Stephen Koss is a board-certified orthopedic surgeon practicing in Hackettstown, New Jersey. In 2023, Dr. Koss performed 28 Medicare-verified knee replacements (#80 in New Jersey) and 19 shoulder replacements (#19 in New Jersey), for a combined total of 47 procedures. All counts reflect Medicare fee-for-service cases, representing approximately 33–37% of total joint replacement volume nationwide.

Verified Medicare Cases (2023)

Knee Replacement
28 verified cases
#80 in New Jersey
Shoulder Replacement
19 verified cases
#19 in New Jersey

Verified Case Volume Trends (2013-2024)

Questions to Ask Dr. Koss

Medicare volume represents only a portion of a surgeon's practice.

Recommended Script:

"Dr. Koss, 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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Contact & Location

📞 Phone: 908-684-3005
108 Bilby Rd
Hackettstown, NJ 7840
NPI: 1265482897
Credentials: MD
✅ Active Medicare provider (NPI verified)
📅 20 years of practice experience
🎓 Licensed MD
🏥 Licensed surgical specialist
🦴 Board-certified orthopedic surgeon
⚽ Sports medicine specialist
📞 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.