Dr. David Nilsen, D.O.

Orthopedic Surgery

Dr. David Nilsen is a board-certified orthopedic surgeon practicing in Janesville, Wisconsin. In 2023, Dr. Nilsen performed 16 Medicare-verified hip replacements, ranking #87 in Wisconsin.

Dr. Nilsen recorded 16 Medicare fee-for-service procedures in 2023. Medicare data represents approximately one-third of all joint replacements nationwide, so these counts reflect only a portion of a surgeon's full practice. Wisconsin has 185 orthopedic surgeons in the current dataset.

Dr. Nilsen's Medicare data shows a focused hip replacement practice with 16 verified procedures in 2023. Surgeons who concentrate on a single procedure type often develop deep procedural expertise, though total practice volume may include additional procedures not captured in Medicare fee-for-service data.

Janesville is home to 5 orthopedic surgeons in the current Medicare dataset. Patients in the Janesville area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.

Verified Medicare Cases (2023)

Hip Replacement
16 verified cases
#87 in Wisconsin
Estimated total: 40 – 50 procedures (all insurers)
Based on Medicare FFS representing 33–37% of national joint replacement volume
How is this estimated?

Medicare Part B fee-for-service claims represent approximately 33–37% of all joint replacements performed nationally (source: CMS data, AJRR). This range estimates the surgeon's total practice volume across all payers. The verified Medicare count above is the definitive, audited figure.

Hospital Affiliations

H
Mercy Health System Corp
Janesville, WI

Verified Case Volume Trends (2013-2023)

Frequently Asked Questions About Dr. Nilsen

How does Dr. Nilsen's procedure volume compare to other Wisconsin surgeons?

In 2023, Dr. Nilsen performed 16 Medicare-verified joint replacement procedures. The Wisconsin average is 52 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Nilsen ranks #153 out of 185 orthopedic surgeons in Wisconsin.

What types of joint replacement does Dr. Nilsen perform?

Dr. Nilsen's reported Medicare volume is focused on hip replacement, with 16 verified procedures in 2023. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.

Are there other orthopedic surgeons near Dr. Nilsen in Janesville?

Yes. There are 5 orthopedic surgeons in Janesville in the current Medicare dataset. Patients can compare procedure volumes and specializations to choose the surgeon who best fits their needs. Use the state page to view all Wisconsin surgeons.

What does the Medicare data for Dr. Nilsen represent?

The procedure counts shown are based on Medicare Part B fee-for-service claims data for 2023, published by the Centers for Medicare and Medicaid Services (CMS). This captures approximately 33–37% of all joint replacements performed nationally. Dr. Nilsen's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 16 procedures shown here.

Other Orthopedic Surgeons in Janesville, Wisconsin

Compare Dr. Nilsen's volume with other surgeons practicing in Janesville.

SurgeonProceduresSpecialties
Dr. Pinak Shukla 41 Hip, Knee
Dr. Brian Keyes 35 Hip, Knee
Dr. Sidney Schulman 28 Knee
Dr. David Pittenger 18 Knee

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Contact & Location

📞 Phone: 608-754-6000
557 N Washington St
Janesville, WI 53548
NPI: 1588811244
Credentials: D.O.
✅ Active Medicare provider (NPI verified)
📅 18 years of practice experience
🎓 Licensed D.O.
🏥 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.