Dr. Michael Kadrmas, M.D.
Contact & Location
605-341-1414
Rapid City, SD 57702
Dr. Kadrmas performs more knee replacement procedures than 37% of orthopedic surgeons in South Dakota, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #30 of 48 ranked knee surgeons in South Dakota.
About Dr. Kadrmas
Practice. Dr. Michael Kadrmas is a board-certified orthopedic surgeon practicing in Rapid City, South Dakota. The latest annual CMS data records 27 knee replacements and 24 hip replacements, 51 procedures in all. That is #30 in South Dakota for knee replacement.
Trend. Medicare records run from 2013 to 2024, 11 years. Volume rose from 12 procedures a year to 51, up 325%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 27 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Rapid City has 9 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 | 12 |
| 2014 | 0 | 0 |
| 2015 | 12 | 17 |
| 2016 | 20 | 0 |
| 2017 | 16 | 18 |
| 2018 | 14 | 15 |
| 2019 | 24 | 23 |
| 2020 | 14 | 14 |
| 2021 | 16 | 32 |
| 2022 | 21 | 25 |
| 2023 | 21 | 28 |
| 2024 | 24 | 27 |
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. Kadrmas Compares
Procedure volume compared to the South Dakota state average.
Volume Trend Analysis
Dr. Kadrmas's Medicare-recorded procedure volume has trended upward over 11 years, increasing 325% from 12 procedures in 2013 to 51 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. Kadrmas
How does Dr. Kadrmas's procedure volume compare to other South Dakota surgeons?
Dr. Kadrmas has performed 51 Medicare-verified joint replacement procedures. The South Dakota average is 70 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Kadrmas ranks #29 out of 52 orthopedic surgeons in South Dakota.
What types of joint replacement does Dr. Kadrmas perform?
Dr. Kadrmas's Medicare data shows procedures in knee replacement (27 cases) and hip replacement (24 cases).
Are there other orthopedic surgeons near Dr. Kadrmas in Rapid City?
Yes. There are 9 orthopedic surgeons in Rapid City 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 South Dakota surgeons.
What does the Medicare data for Dr. Kadrmas 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. Kadrmas's total volume across all insurers at roughly 170 to 210 procedures against the 51 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. Kadrmas's procedure volume changed over time?
Yes. Dr. Kadrmas's Medicare-recorded volume has increased from 12 procedures in 2013 to 51 in the most recent data, a 325% increase over 11 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 51 procedures in 2024.
Does Dr. Kadrmas perform more than one type of joint replacement?
Yes. Dr. Kadrmas's Medicare data shows procedures in knee replacement (27 cases), hip replacement (24 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
How does Dr. Kadrmas compare to other orthopedic surgeons in Rapid City?
Among the 9 orthopedic surgeons in Rapid City, Dr. Kadrmas ranks #5 by total Medicare procedure volume. The highest-volume surgeon in Rapid City has 147 verified Medicare procedures.
Other Orthopedic Surgeons in Rapid City, South Dakota
Dr. Kadrmas's 51 Medicare procedures are below the Rapid City average of 81. The table below compares verified procedure volumes for orthopedic surgeons practicing in Rapid City.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Jeffrey Marrs | 147 | Hip, Knee |
| Dr. Samuel Mortimer | 112 | Hip, Knee, Shoulder |
| Dr. Steven Giuseffi | 92 | Hip, Knee, Shoulder |
| Dr. Clark Duchene | 91 | Hip, Knee, Shoulder |
| Dr. Emmett McEleney | 45 | Hip, Knee |
| Dr. Lew Papendick | 32 | 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.