Dr. Mark Oyer is a board-certified orthopedic surgeon practicing in Rockford, Illinois. In 2023, Dr. Oyer performed 131 Medicare-verified knee replacements (#12 in Illinois) and 82 hip replacements, for a combined total of 213 procedures.
With 213 total procedures, Dr. Oyer ranks in the top 4% of orthopedic surgeons in Illinois, where the average surgeon performs 70 Medicare-verified procedures per year. That is more than 3x the statewide average.
Dr. Oyer's reported Medicare volume is split between knee replacements (131 cases) and hip replacements (82 cases).
Rockford is home to 9 orthopedic surgeons in the current Medicare dataset. Patients in the Rockford area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Verified Medicare Cases (2023)
Verified Case Volume Trends (2013-2024)
Frequently Asked Questions About Dr. Oyer
How does Dr. Oyer's procedure volume compare to other Illinois surgeons?
In 2023, Dr. Oyer performed 213 Medicare-verified joint replacement procedures. This is more than 3x the Illinois average of 70 procedures per surgeon. Dr. Oyer ranks #13 out of 314 orthopedic surgeons in Illinois.
What types of joint replacement does Dr. Oyer perform?
Dr. Oyer's Medicare data shows procedures in knee replacement (131 cases) and hip replacement (82 cases).
How experienced is Dr. Oyer with knee replacement surgery?
Dr. Oyer ranks #12 in Illinois for knee replacement with 131 Medicare-verified procedures in 2023. This high ranking among 314 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Oyer in Rockford?
Yes. There are 9 orthopedic surgeons in Rockford 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 Illinois surgeons.
What does the Medicare data for Dr. Oyer 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. Oyer's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 213 procedures shown here.
Other Orthopedic Surgeons in Rockford, Illinois
Compare Dr. Oyer's volume with other surgeons practicing in Rockford.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. John Bottros | 202 | Hip, Knee |
| Dr. Mark Barba | 123 | Hip, Knee |
| Dr. Scott Trenhaile | 66 | Shoulder |
| Dr. Jeremiah Pflederer | 56 | Hip, Knee |
| Dr. Mathew Legel | 37 | Hip, Knee |
| Dr. Scott Nyquist | 18 | Knee |
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Rockford, IL 61114