Dr. Leo Semkiw, M.D.
Contact & Location
408-371-5300
San Jose, CA 95124
Dr. Semkiw performs more knee replacement procedures than 40% of orthopedic surgeons in California, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #291 of 491 ranked knee surgeons in California.
About Dr. Semkiw
Dr. Leo Semkiw is a board-certified orthopedic surgeon practicing in San Jose, California. A Medicare provider since 2006, Dr. Semkiw performed 25 Medicare-verified knee replacements in the latest annual CMS data, ranking #291 in California.
In California, Dr. Semkiw performs below the state average in knee (25 vs 47).
Dr. Semkiw's Medicare data shows a focused knee replacement practice with 25 verified procedures. 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.
San Jose is home to 5 orthopedic surgeons in the current Medicare dataset. Patients in the San Jose area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Semkiw extend back to 2016, covering 8 years of data. Over that period, recorded procedure volume increased from 12 to 25 in the most recent data, a 108% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Semkiw's 25 knee replacement procedures is below the national average of 45 among 6,599 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 12 |
| 2017 | 0 | 13 |
| 2018 | 0 | 13 |
| 2019 | 11 | 14 |
| 2020 | 0 | 0 |
| 2021 | 0 | 18 |
| 2022 | 0 | 19 |
| 2023 | 0 | 24 |
| 2024 | 0 | 25 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims are one payer stream among several, and the share they represent differs by procedure. In 2024 it was 23% to 28% for knee replacement. Each verified count above is divided by its own procedure's range, and the results are added, to estimate total practice volume across all payers. The verified Medicare count is the definitive, audited figure; this is a range derived from published national volume projections, not a measurement, and an individual practice can sit well outside it: how these ranges are derived, and their sources.
How Dr. Semkiw Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Semkiw's Medicare-recorded procedure volume has trended upward over 8 years, increasing 108% from 12 procedures in 2016 to 25 in the most recent data.
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. Semkiw
How does Dr. Semkiw's procedure volume compare to other California surgeons?
Dr. Semkiw has performed 25 Medicare-verified joint replacement procedures. The California average is 68 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Semkiw ranks #424 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Semkiw perform?
Dr. Semkiw's reported Medicare volume is focused on knee replacement, with 25 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Semkiw in San Jose?
Yes. There are 5 orthopedic surgeons in San Jose 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 California surgeons.
What does the Medicare data for Dr. Semkiw represent?
The procedure counts shown are based on 2024 Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). Medicare fee-for-service is only one payer stream, and the share of national volume it represents differs by procedure. In 2024 the share was 23% to 28% for knee replacement, which puts Dr. Semkiw's total volume across all insurers at roughly 90 to 110 procedures against the 25 verified here. Those shares are derived from published national volume projections rather than quoted from a single publication, and they are estimates with real uncertainty. The OrthoProcedures methodology page shows the full derivation, the sources, and the limits at orthoprocedures.com/data-methodology.html.
Has Dr. Semkiw's procedure volume changed over time?
Yes. Dr. Semkiw's Medicare-recorded volume has increased from 12 procedures in 2016 to 25 in the most recent data, a 108% increase over 8 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 25 procedures in 2019.
How does Dr. Semkiw compare to other orthopedic surgeons in San Jose?
Among the 5 orthopedic surgeons in San Jose, Dr. Semkiw ranks #2 by total Medicare procedure volume. Dr. Semkiw is among the highest-volume surgeons in San Jose.
Other Orthopedic Surgeons in San Jose, California
Dr. Semkiw's 25 Medicare procedures are above the San Jose average of 23. The table below compares verified procedure volumes for orthopedic surgeons practicing in San Jose.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. William Wall | 38 | Hip, Knee |
| Dr. Fook Wong | 25 | Knee |
| Dr. Christian Foglar | 13 | Knee |
| Dr. Jaideep Iyengar | 12 | Hip |
Patient Resources & Verification
Research reviews, verify credentials, and check official quality data through these trusted sources:
Medicare Care Compare and NPI Registry are official U.S. government sources. Google reviews reflect user-submitted feedback. OrthoProcedures.com does not verify the accuracy of third-party review content.