Dr. Steven Kumagai, M.D.
Contact & Location
402-637-0800
Omaha, NE 68144
Dr. Kumagai performs more knee replacement procedures than 35% of orthopedic surgeons in Nebraska, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #39 of 60 ranked knee surgeons in Nebraska.
About Dr. Kumagai
Practice. Dr. Steven Kumagai is a board-certified orthopedic surgeon practicing in Omaha, Nebraska. The latest annual CMS data records 35 knee replacements and 18 hip replacements, 53 procedures in all. That is #39 in Nebraska for knee replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 30 procedures a year to 53, up 77%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 35 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Omaha has 23 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 | 30 |
| 2014 | 0 | 16 |
| 2015 | 0 | 26 |
| 2016 | 0 | 27 |
| 2017 | 0 | 25 |
| 2018 | 12 | 39 |
| 2019 | 0 | 23 |
| 2020 | 13 | 28 |
| 2021 | 15 | 32 |
| 2022 | 29 | 24 |
| 2023 | 21 | 30 |
| 2024 | 18 | 35 |
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. Kumagai Compares
Procedure volume compared to the Nebraska state average.
Volume Trend Analysis
Dr. Kumagai's Medicare-recorded procedure volume has trended upward over 12 years, increasing 77% from 30 procedures in 2013 to 53 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.
Rehabilitation Roadmap: Your Complete Recovery GuideA structured physical therapy progression from the first post-op exercises through full strength and mobility restoration over 3 to 6 months.
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. Kumagai
How does Dr. Kumagai's procedure volume compare to other Nebraska surgeons?
Dr. Kumagai has performed 53 Medicare-verified joint replacement procedures. The Nebraska average is 81 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Kumagai ranks #44 out of 72 orthopedic surgeons in Nebraska.
What types of joint replacement does Dr. Kumagai perform?
Dr. Kumagai's Medicare data shows procedures in knee replacement (35 cases) and hip replacement (18 cases).
Are there other orthopedic surgeons near Dr. Kumagai in Omaha?
Yes. There are 23 orthopedic surgeons in Omaha 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 Nebraska surgeons.
What does the Medicare data for Dr. Kumagai 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. Kumagai's total volume across all insurers at roughly 180 to 220 procedures against the 53 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. Kumagai's procedure volume changed over time?
Yes. Dr. Kumagai's Medicare-recorded volume has increased from 30 procedures in 2013 to 53 in the most recent data, a 77% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 53 procedures in 2022.
Does Dr. Kumagai perform more than one type of joint replacement?
Yes. Dr. Kumagai's Medicare data shows procedures in knee replacement (35 cases), hip replacement (18 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Kumagai affiliated with?
According to CMS facility affiliation data, Dr. Kumagai is affiliated with Orthonebraska Hospital, Methodist Hospital, The Nebraska Medical Center, Franciscan Healthcare.
How does Dr. Kumagai compare to other orthopedic surgeons in Omaha?
Among the 23 orthopedic surgeons in Omaha, Dr. Kumagai ranks #19 by total Medicare procedure volume. The highest-volume surgeon in Omaha has 294 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Kumagai practices?
Orthonebraska Hospital (insufficient case volume for complication rate comparison); Methodist Hospital (4 out of 5 CMS stars, hip/knee complication rate similar to national average); The Nebraska Medical Center (3 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 Omaha, Nebraska
Dr. Kumagai's 53 Medicare procedures are below the Omaha average of 148. The table below compares verified procedure volumes for orthopedic surgeons practicing in Omaha.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Sayfe Jassim | 294 | Hip, Knee |
| Dr. Mark Goebel | 167 | Hip, Knee, Shoulder |
| Dr. Joshua Urban | 142 | Hip, Knee |
| Dr. Clayton Thor | 141 | Hip, Knee |
| Dr. Beau Kildow | 122 | Hip, Knee |
| Dr. Erik Otterberg | 114 | Hip, Knee |
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.