Dr. Joshua Niemann, M.D.
Contact & Location
816-781-6066
Liberty, MO 64068
Dr. Niemann performs more knee replacement procedures than 71% of orthopedic surgeons in Missouri, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #47 of 166 ranked knee surgeons in Missouri.
About Dr. Niemann
Dr. Joshua Niemann is a board-certified orthopedic surgeon practicing in Liberty, Missouri. A Medicare provider since 2006, Dr. Niemann performed 47 Medicare-verified knee replacements (#47 in Missouri) and 31 hip replacements in the latest annual CMS data, for a combined total of 78 procedures.
In Missouri, Dr. Niemann performs near the state average in knee (47 vs 42), near the state average in hip (31 vs 32).
Dr. Niemann's reported Medicare volume is split between knee replacements (47 cases) and hip replacements (31 cases).
Liberty is home to 3 orthopedic surgeons in the current Medicare dataset. Patients in the Liberty area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Niemann extend back to 2013, covering 12 years of data. Over that period, recorded procedure volume increased from 33 to 78 in the most recent data, a 136% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,599 knee replacement surgeons tracked nationally, Dr. Niemann's 47 verified procedures is near the national average of 45.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 19 | 14 |
| 2014 | 14 | 0 |
| 2015 | 21 | 24 |
| 2016 | 40 | 43 |
| 2017 | 28 | 35 |
| 2018 | 29 | 50 |
| 2019 | 35 | 37 |
| 2020 | 27 | 36 |
| 2021 | 37 | 37 |
| 2022 | 33 | 38 |
| 2023 | 31 | 30 |
| 2024 | 31 | 47 |
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. Niemann Compares
Procedure volume compared to the Missouri state average.
Volume Trend Analysis
Dr. Niemann's Medicare-recorded procedure volume has trended upward over 12 years, increasing 136% from 33 procedures in 2013 to 78 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.
What to Expect on the Day of SurgeryA step-by-step walkthrough of your surgical day, from pre-op preparation through anesthesia, the procedure itself, and the first hours of recovery.
Home Safety: Creating Your Recovery SanctuaryRoom-by-room modifications, equipment recommendations, and fall-prevention strategies to prepare your home for a safe post-surgical recovery.
Medicare Coverage for Joint ReplacementWhat Medicare Part A and Part B cover for joint replacement surgery, including hospital stays, surgeon fees, anesthesia, and physical therapy.
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. Niemann
How does Dr. Niemann's procedure volume compare to other Missouri surgeons?
Dr. Niemann has performed 78 Medicare-verified joint replacement procedures. This is in line with the Missouri average of 59 procedures per surgeon. Dr. Niemann ranks #47 out of 204 orthopedic surgeons in Missouri.
What types of joint replacement does Dr. Niemann perform?
Dr. Niemann's Medicare data shows procedures in knee replacement (47 cases) and hip replacement (31 cases).
Are there other orthopedic surgeons near Dr. Niemann in Liberty?
Yes. There are 3 orthopedic surgeons in Liberty 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 Missouri surgeons.
What does the Medicare data for Dr. Niemann 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. Niemann's total volume across all insurers at roughly 260 to 330 procedures against the 78 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. Niemann's procedure volume changed over time?
Yes. Dr. Niemann's Medicare-recorded volume has increased from 33 procedures in 2013 to 78 in the most recent data, a 136% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 83 procedures in 2016.
Does Dr. Niemann perform more than one type of joint replacement?
Yes. Dr. Niemann's Medicare data shows procedures in knee replacement (47 cases), hip replacement (31 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Niemann affiliated with?
According to CMS facility affiliation data, Dr. Niemann is affiliated with Liberty Hospital, Nkc Health.
How does Dr. Niemann compare to other orthopedic surgeons in Liberty?
Among the 3 orthopedic surgeons in Liberty, Dr. Niemann ranks #1 by total Medicare procedure volume. Dr. Niemann has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Niemann practices?
Liberty Hospital (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Nkc Health (4 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 Liberty, Missouri
Dr. Niemann's 78 Medicare procedures are above the Liberty average of 54. The table below compares verified procedure volumes for orthopedic surgeons practicing in Liberty.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Santosh George | 71 | Knee, Shoulder |
| Dr. Ryan Snyder | 12 | 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.