Dr. Steven Nishiyama, D.O., Ph.D.
Contact & Location
702-731-1616
Las Vegas, NV 89121
Las Vegas, NV 89149
Las Vegas, NV 89113
Dr. Nishiyama performs more knee replacement procedures than 88% of orthopedic surgeons in Nevada, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #6 of 50 ranked knee surgeons in Nevada.
About Dr. Nishiyama
Practice. Dr. Steven Nishiyama is a board-certified orthopedic surgeon practicing in Las Vegas, Nevada. The latest annual CMS data records 79 knee replacements and 36 hip replacements, 115 procedures in all. That is #6 in Nevada for knee replacement. A Medicare provider since 2012.
Trend. Medicare records run from 2018 to 2024, 7 years. Volume rose from 32 procedures a year to 115, up 259%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 79 procedures is above the national average of 45.
Local context. Las Vegas has 26 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 13 | 19 |
| 2019 | 0 | 16 |
| 2020 | 18 | 38 |
| 2021 | 36 | 49 |
| 2022 | 37 | 71 |
| 2023 | 26 | 69 |
| 2024 | 36 | 79 |
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, 25% to 33% for hip 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. Nishiyama Compares
Procedure volume compared to the Nevada state average.
Volume Trend Analysis
Dr. Nishiyama's Medicare-recorded procedure volume has trended upward over 7 years, increasing 259% from 32 procedures in 2018 to 115 in the most recent data.
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. Nishiyama
How does Dr. Nishiyama's procedure volume compare to other Nevada surgeons?
Dr. Nishiyama has performed 115 Medicare-verified joint replacement procedures. This is significantly above the Nevada average of 67 procedures per surgeon. Dr. Nishiyama ranks #7 out of 58 orthopedic surgeons in Nevada.
What types of joint replacement does Dr. Nishiyama perform?
Dr. Nishiyama's Medicare data shows procedures in knee replacement (79 cases) and hip replacement (36 cases).
How experienced is Dr. Nishiyama with knee replacement surgery?
Dr. Nishiyama ranks #6 in Nevada for knee replacement with 79 Medicare-verified procedures. This high ranking among 58 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Nishiyama in Las Vegas?
Yes. There are 26 orthopedic surgeons in Las Vegas 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 Nevada surgeons.
What does the Medicare data for Dr. Nishiyama 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, 25% to 33% for hip replacement, which puts Dr. Nishiyama's total volume across all insurers at roughly 390 to 490 procedures against the 115 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. Nishiyama's procedure volume changed over time?
Yes. Dr. Nishiyama's Medicare-recorded volume has increased from 32 procedures in 2018 to 115 in the most recent data, a 259% increase over 7 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 115 procedures in 2024.
Does Dr. Nishiyama perform more than one type of joint replacement?
Yes. Dr. Nishiyama's Medicare data shows procedures in knee replacement (79 cases), hip replacement (36 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Nishiyama affiliated with?
According to CMS facility affiliation data, Dr. Nishiyama is affiliated with Spring Valley Hospital Medical Center, Valley Hospital Medical Center.
How does Dr. Nishiyama compare to other orthopedic surgeons in Las Vegas?
Among the 26 orthopedic surgeons in Las Vegas, Dr. Nishiyama ranks #2 by total Medicare procedure volume. Dr. Nishiyama is among the highest-volume surgeons in Las Vegas.
What are the quality ratings for hospitals where Dr. Nishiyama practices?
Spring Valley Hospital Medical Center (2 out of 5 CMS stars, hip/knee complication rate similar to national average); Valley Hospital Medical Center (2 out of 5 CMS stars, hip/knee complication rate similar to national average). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Las Vegas, Nevada
Dr. Nishiyama's 115 Medicare procedures are above the Las Vegas average of 97. The table below compares verified procedure volumes for orthopedic surgeons practicing in Las Vegas.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. John Baldauf | 161 | Hip, Knee, Shoulder |
| Dr. Roger Fontes | 107 | Hip, Knee, Shoulder |
| Dr. Russell Nevins | 98 | Hip, Knee |
| Dr. Parminder Kang | 72 | Hip, Knee |
| Dr. Lawrence Huff | 68 | Shoulder |
| Dr. Galen Kam | 57 | Shoulder |
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.