Dr. Mark Stewart, M.D.
Contact & Location
309-762-3621
Moline, IL 61265
Dr. Stewart performs more knee replacement procedures than 56% of orthopedic surgeons in Illinois, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #108 of 251 ranked knee surgeons in Illinois.
About Dr. Stewart
Practice. Dr. Mark Stewart is a board-certified orthopedic surgeon practicing in Moline, Illinois. The latest annual CMS data records 45 knee replacements and 12 hip replacements, 57 procedures in all. That is #108 in Illinois for knee replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume peaked at 95 in 2015 and stands at 57 now. Reporting changes and payer mix can both move that number.
National context. Among 6,612 knee replacement surgeons tracked nationally, 45 procedures is near the national average of 45.
Local context. Moline has 6 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist. Dr. Stewart also holds hospital privileges in IL and IA, a practice that extends beyond Illinois.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement | Shoulder Replacement |
|---|---|---|---|
| 2013 | 21 | 56 | 0 |
| 2014 | 18 | 60 | 0 |
| 2015 | 17 | 67 | 11 |
| 2016 | 21 | 50 | 0 |
| 2017 | 17 | 41 | 11 |
| 2018 | 19 | 53 | 0 |
| 2019 | 23 | 44 | 0 |
| 2020 | 0 | 44 | 20 |
| 2021 | 12 | 46 | 0 |
| 2022 | 13 | 45 | 0 |
| 2023 | 13 | 36 | 0 |
| 2024 | 12 | 45 | 0 |
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. Stewart Compares
Procedure volume compared to the Illinois state average.
Volume Trend Analysis
Dr. Stewart's recorded volume peaked at 95 procedures in 2015 and stood at 57 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.
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.
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.
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. Stewart
How does Dr. Stewart's procedure volume compare to other Illinois surgeons?
Dr. Stewart has performed 57 Medicare-verified joint replacement procedures. This is in line with the Illinois average of 69 procedures per surgeon. Dr. Stewart ranks #140 out of 316 orthopedic surgeons in Illinois.
What types of joint replacement does Dr. Stewart perform?
Dr. Stewart's Medicare data shows procedures in knee replacement (45 cases) and hip replacement (12 cases).
Are there other orthopedic surgeons near Dr. Stewart in Moline?
Yes. There are 6 orthopedic surgeons in Moline 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 Illinois surgeons.
What does the Medicare data for Dr. Stewart 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. Stewart's total volume across all insurers at roughly 200 to 240 procedures against the 57 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. Stewart's procedure volume changed over time?
Dr. Stewart's Medicare-recorded volume peaked at 95 procedures in 2015 and was 57 in the most recent data. Volume fluctuations can reflect changes in payer mix, practice focus, or Medicare reporting rather than a change in overall surgical activity.
Does Dr. Stewart perform more than one type of joint replacement?
Yes. Dr. Stewart's Medicare data shows procedures in knee replacement (45 cases), hip replacement (12 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Stewart affiliated with?
According to CMS facility affiliation data, Dr. Stewart is affiliated with Hammond Henry Hospital, Trinity Rock Island, Mercyone Genesis Silvis Medical Center, Osf Saint Luke Medical Center, Trinity Bettendorf. Dr. Stewart maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
How does Dr. Stewart compare to other orthopedic surgeons in Moline?
Among the 6 orthopedic surgeons in Moline, Dr. Stewart ranks #2 by total Medicare procedure volume. Dr. Stewart is among the highest-volume surgeons in Moline.
What are the quality ratings for hospitals where Dr. Stewart practices?
Hammond Henry Hospital (insufficient case volume for complication rate comparison); Trinity Rock Island (2 out of 5 CMS stars, hip/knee complication rate similar to national average); Mercyone Genesis Silvis 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 Moline, Illinois
Dr. Stewart's 57 Medicare procedures are above the Moline average of 52. The table below compares verified procedure volumes for orthopedic surgeons practicing in Moline.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Edward Connolly | 130 | Hip, Knee |
| Dr. Steven Boardman | 38 | Hip, Knee |
| Dr. Waqas Hussain | 37 | Knee |
| Dr. Shawn Wynn | 26 | Knee |
| Dr. Jason Clark | 24 | Knee, 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.