Dr. Matthew Duffin, M.D.
Contact & Location
803-329-3130
Rock Hill, SC 29732
Fort Mill, SC 29708
Charlotte, NC 28277
Charlotte, NC 28210
Dr. Duffin performs more knee replacement procedures than 69% of orthopedic surgeons in South Carolina, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #37 of 120 ranked knee surgeons in South Carolina.
About Dr. Duffin
Practice. Dr. Matthew Duffin is a board-certified orthopedic surgeon practicing in Rock Hill, South Carolina. The latest annual CMS data records 64 knee replacements and 26 hip replacements, 90 procedures in all. That is #37 in South Carolina for knee replacement.
Trend. Medicare records run from 2022 to 2024, 3 years. Volume rose from 56 procedures a year to 90, up 61%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 64 procedures is above the national average of 45.
Local context. Rock Hill has 5 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist. Dr. Duffin also holds hospital privileges in NC and SC, a practice that extends beyond South Carolina.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 36 | 20 |
| 2023 | 37 | 38 |
| 2024 | 26 | 64 |
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. Duffin Compares
Procedure volume compared to the South Carolina state average.
Volume Trend Analysis
Dr. Duffin's Medicare-recorded procedure volume has trended upward over 3 years, increasing 61% from 56 procedures in 2022 to 90 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.
Prehabilitation: Preparing Your Body for SurgeryEvidence-based exercises and lifestyle adjustments that can improve surgical outcomes and speed recovery when started weeks before your procedure.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
Medicare Bundled Payment Programs for Joint ReplacementHow bundled payment models affect your joint replacement costs and care coordination, and what it means for hospital and surgeon selection.
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. Duffin
How does Dr. Duffin's procedure volume compare to other South Carolina surgeons?
Dr. Duffin has performed 90 Medicare-verified joint replacement procedures. This is in line with the South Carolina average of 76 procedures per surgeon. Dr. Duffin ranks #51 out of 158 orthopedic surgeons in South Carolina.
What types of joint replacement does Dr. Duffin perform?
Dr. Duffin's Medicare data shows procedures in knee replacement (64 cases) and hip replacement (26 cases).
Are there other orthopedic surgeons near Dr. Duffin in Rock Hill?
Yes. There are 5 orthopedic surgeons in Rock Hill 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 Carolina surgeons.
What does the Medicare data for Dr. Duffin 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. Duffin's total volume across all insurers at roughly 310 to 380 procedures against the 90 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. Duffin's procedure volume changed over time?
Yes. Dr. Duffin's Medicare-recorded volume has increased from 56 procedures in 2022 to 90 in the most recent data, a 61% increase over 3 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 90 procedures in 2024.
Does Dr. Duffin perform more than one type of joint replacement?
Yes. Dr. Duffin's Medicare data shows procedures in knee replacement (64 cases), hip replacement (26 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Duffin affiliated with?
According to CMS facility affiliation data, Dr. Duffin is affiliated with Atrium Health Pineville, Carolinas Medical Center/Behav Health, Piedmont Medical Center. Dr. Duffin maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
How does Dr. Duffin compare to other orthopedic surgeons in Rock Hill?
Among the 5 orthopedic surgeons in Rock Hill, Dr. Duffin ranks #2 by total Medicare procedure volume. Dr. Duffin is among the highest-volume surgeons in Rock Hill.
What are the quality ratings for hospitals where Dr. Duffin practices?
Atrium Health Pineville (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Carolinas Medical Center/Behav Health (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Piedmont 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 Rock Hill, South Carolina
Dr. Duffin's 90 Medicare procedures are above the Rock Hill average of 53. The table below compares verified procedure volumes for orthopedic surgeons practicing in Rock Hill.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Kevin Weiss | 104 | Hip, Knee |
| Dr. Matthew Schwartz | 35 | Shoulder |
| Dr. Eugene Powell | 19 | Knee |
| Dr. James Rentz | 16 | 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.