Dr. Steven Nishiyama, D.O., PH.D.
Contact & Location
Las Vegas, NV 89121
Dr. Steven Nishiyama is a board-certified orthopedic surgeon practicing in Las Vegas, Nevada. A Medicare provider since 2012, Dr. Nishiyama has performed 79 Medicare-verified knee replacements (#6 in Nevada) and 36 hip replacements, for a combined total of 115 procedures.
In Nevada, Dr. Nishiyama performs above average in knee (79 vs 40 avg), near average in hip (36 vs 38 avg).
Dr. Nishiyama's reported Medicare volume is split between knee replacements (79 cases) and hip replacements (36 cases).
Las Vegas is home to 26 orthopedic surgeons in the current Medicare dataset. Patients in the Las Vegas area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Nishiyama extend back to 2018, covering 7 years of data. Over that period, recorded procedure volume increased from 32 to 115 in the most recent data, a 259% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,599 knee replacement surgeons tracked nationally, Dr. Nishiyama's 79 verified procedures is above the national average of 45.
Verified Case Volume Trends (2013-Current)
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. 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 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. Nishiyama's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 115 procedures shown here.
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 Valley Hospital Medical Center, Spring 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?
Valley Hospital Medical Center (2 out of 5 CMS stars, hip/knee complication rate similar to national average); Spring 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.