Dr. Stephen Duncan, M.D.
Contact & Location
859-323-5533
Lexington, KY 40536
Dr. Duncan performs more hip replacement procedures than 77% of orthopedic surgeons in Kentucky, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #14 of 63 ranked hip surgeons in Kentucky.
About Dr. Duncan
Practice. Dr. Stephen Duncan is a board-certified orthopedic surgeon practicing in Lexington, Kentucky. The latest annual CMS data records 36 hip replacements and 25 knee replacements, 61 procedures in all. That is #14 in Kentucky for hip replacement. A Medicare provider since 2008.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 33 procedures a year to 61, up 85%.
National context. Among 4,542 hip replacement surgeons tracked nationally, 36 procedures is near the national average of 36.
Local context. Lexington has 22 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 | 18 | 15 |
| 2014 | 13 | 0 |
| 2015 | 16 | 20 |
| 2016 | 22 | 23 |
| 2017 | 17 | 36 |
| 2018 | 16 | 24 |
| 2019 | 24 | 33 |
| 2020 | 22 | 24 |
| 2021 | 25 | 28 |
| 2022 | 14 | 19 |
| 2023 | 18 | 23 |
| 2024 | 36 | 25 |
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 25% to 33% for hip replacement, 23% to 28% for knee 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. Duncan Compares
Procedure volume compared to the Kentucky state average.
Volume Trend Analysis
Dr. Duncan's Medicare-recorded procedure volume has trended upward over 12 years, increasing 85% from 33 procedures in 2013 to 61 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 Hip Replacement
If you are considering hip replacement surgery, these evidence-based guides can help you prepare and recover:
Understanding the progression from conservative treatments to surgical intervention, and how to determine when hip replacement becomes the right choice.
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.
Recovery Timeline: Week-by-Week ExpectationsA detailed week-by-week guide covering pain levels, mobility milestones, physical therapy progression, and when to expect a return to daily activities.
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.
Hip Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after hip replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full hip replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Duncan
How does Dr. Duncan's procedure volume compare to other Kentucky surgeons?
Dr. Duncan has performed 61 Medicare-verified joint replacement procedures. This is in line with the Kentucky average of 61 procedures per surgeon. Dr. Duncan ranks #41 out of 128 orthopedic surgeons in Kentucky.
What types of joint replacement does Dr. Duncan perform?
Dr. Duncan's Medicare data shows procedures in hip replacement (36 cases) and knee replacement (25 cases).
How experienced is Dr. Duncan with hip replacement surgery?
Dr. Duncan ranks #14 in Kentucky for hip replacement with 36 Medicare-verified procedures. This high ranking among 128 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Duncan in Lexington?
Yes. There are 22 orthopedic surgeons in Lexington 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 Kentucky surgeons.
What does the Medicare data for Dr. Duncan 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 25% to 33% for hip replacement, 23% to 28% for knee replacement, which puts Dr. Duncan's total volume across all insurers at roughly 200 to 250 procedures against the 61 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. Duncan's procedure volume changed over time?
Yes. Dr. Duncan's Medicare-recorded volume has increased from 33 procedures in 2013 to 61 in the most recent data, a 85% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 61 procedures in 2024.
Does Dr. Duncan perform more than one type of joint replacement?
Yes. Dr. Duncan's Medicare data shows procedures in hip replacement (36 cases), knee replacement (25 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Duncan affiliated with?
According to CMS facility affiliation data, Dr. Duncan is affiliated with University Of Kentucky Hospital, Harrison Memorial Hospital.
How does Dr. Duncan compare to other orthopedic surgeons in Lexington?
Among the 22 orthopedic surgeons in Lexington, Dr. Duncan ranks #10 by total Medicare procedure volume. The highest-volume surgeon in Lexington has 253 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Duncan practices?
University Of Kentucky Hospital (4 out of 5 CMS stars, insufficient case volume for complication rate comparison); Harrison Memorial Hospital (3 out of 5 CMS stars, insufficient case volume for complication rate comparison). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Lexington, Kentucky
Dr. Duncan's 61 Medicare procedures are below the Lexington average of 131. The table below compares verified procedure volumes for orthopedic surgeons practicing in Lexington.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Christian Christensen | 253 | Hip, Knee |
| Dr. Tharun Karthikeyan | 205 | Hip, Knee |
| Dr. Kevin Denehy | 135 | Hip, Knee |
| Dr. Jeffrey Selby | 89 | Hip, Knee |
| Dr. Wallace Huff | 89 | Hip, Knee |
| Dr. Ryan Donegan | 82 | 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.