Dr. Brian Keyes, DO
Dr. Brian Keyes is a board-certified orthopedic surgeon practicing in Janesville, Wisconsin. Dr. Keyes has performed 24 Medicare-verified knee replacements (#92 in Wisconsin) and 11 hip replacements, for a combined total of 35 procedures.
In Wisconsin, Dr. Keyes performs below average in knee (24 vs 37 avg), below average in hip (11 vs 29 avg).
Dr. Keyes's reported Medicare volume is split between knee replacements (24 cases) and hip replacements (11 cases).
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.
Dr. Keyes's Medicare data spans 10 years, beginning in 2014. Volume peaked at 81 procedures in 2021 before settling at 35 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Dr. Keyes's 24 knee replacement procedures is below the national average of 45 among 6,720 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
Verified Medicare Cases
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.
How Dr. Keyes Compares
Procedure volume compared to the Wisconsin state average.
Contact & Location
Janesville, WI 53546
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Keyes's recorded volume peaked at 81 procedures in 2021 and stood at 35 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.
Hospital Affiliations & Quality
Quality ratings and complication rates are hospital-level metrics from CMS Hospital Compare and do not reflect individual surgeon performance. Star ratings updated quarterly. Complication data covers a rolling 3-year period.
Patient Resources: Preparing for Knee Replacement
If you are considering knee replacement surgery, these evidence-based guides can help you prepare and recover:
An overview of current surgical approaches including robotic-assisted and minimally invasive techniques, implant options, and expected outcomes.
Questions to Ask Your Surgeon Before Joint ReplacementA practical checklist of questions covering experience, technique, hospital choice, and recovery expectations to discuss during your surgical consultation.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
Outpatient Joint Replacement: A Medicare GuideHow outpatient joint replacement works under Medicare, including eligibility criteria, cost differences, and what to expect with same-day discharge.
Knee Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after knee replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full knee replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Keyes
How does Dr. Keyes's procedure volume compare to other Wisconsin surgeons?
Dr. Keyes has performed 35 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. Keyes ranks #107 out of 185 orthopedic surgeons in Wisconsin.
What types of joint replacement does Dr. Keyes perform?
Dr. Keyes's Medicare data shows procedures in knee replacement (24 cases) and hip replacement (11 cases).
Are there other orthopedic surgeons near Dr. Keyes 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. Keyes represent?
The procedure counts shown are based on the most recent Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). This captures approximately 33–37% of all joint replacements performed nationally. Dr. Keyes's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 35 procedures shown here.
Has Dr. Keyes's procedure volume changed over time?
Dr. Keyes's Medicare-recorded volume peaked at 81 procedures in 2021 and was 35 in the most recent data. Volume fluctuations can reflect changes in payer mix, practice focus, or Medicare reporting rather than a change in overall surgical activity.
Does Dr. Keyes perform more than one type of joint replacement?
Yes. Dr. Keyes's Medicare data shows procedures in knee replacement (24 cases), hip replacement (11 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Keyes affiliated with?
According to CMS facility affiliation data, Dr. Keyes is affiliated with Edgerton Hospital And Health Services, Upland Hills Health, Ssm Health St Mary'S Hospital - Janesville, Mercy Health System Corp, Beloit Memorial Hospital.
How does Dr. Keyes compare to other orthopedic surgeons in Janesville?
Among the 5 orthopedic surgeons in Janesville, Dr. Keyes ranks #2 by total Medicare procedure volume. Dr. Keyes is among the highest-volume surgeons in Janesville.
What are the quality ratings for hospitals where Dr. Keyes practices?
Upland Hills Health (3 out of 5 CMS stars, insufficient case volume for complication rate comparison); Ssm Health St Mary'S Hospital - Janesville (4 out of 5 CMS stars, insufficient case volume for complication rate comparison). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Janesville, Wisconsin
Dr. Keyes's 35 Medicare procedures are above the Janesville average of 28. The table below compares verified procedure volumes for orthopedic surgeons practicing in Janesville.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Pinak Shukla | 41 | Hip, Knee |
| Dr. Sidney Schulman | 28 | Knee |
| Dr. David Pittenger | 18 | Knee |
| Dr. David Nilsen | 16 | Hip |
Patient Reviews & Ratings
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