Dr. Gavan Duffy, M.D.
Contact & Location
904-634-0640
Jacksonville, FL 32256
St Augustine, FL 32084
Jacksonville, FL 32204
Jacksonville, FL 32204
Fleming Island, FL 32003
Dr. Duffy performs more knee replacement procedures than 93% of orthopedic surgeons in Florida, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #25 of 406 ranked knee surgeons in Florida.
About Dr. Duffy
Practice. Dr. Gavan Duffy is a board-certified orthopedic surgeon practicing in Jacksonville, Florida. The latest annual CMS data records 125 knee replacements and 29 hip replacements, 154 procedures in all. That is #25 in Florida for knee replacement. A Medicare provider since 2005.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume peaked at 370 in 2016 and stands at 154 now. Reporting changes and payer mix can both move that number.
National context. Among 6,612 knee replacement surgeons tracked nationally, 125 procedures is more than 2x the national average of 45.
Local context. Jacksonville has 23 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 | 80 | 210 |
| 2014 | 77 | 218 |
| 2015 | 88 | 268 |
| 2016 | 83 | 287 |
| 2017 | 59 | 265 |
| 2018 | 56 | 236 |
| 2019 | 66 | 230 |
| 2020 | 66 | 176 |
| 2021 | 39 | 165 |
| 2022 | 61 | 149 |
| 2023 | 39 | 137 |
| 2024 | 29 | 125 |
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. Duffy Compares
Procedure volume compared to the Florida state average.
Volume Trend Analysis
Dr. Duffy's recorded volume peaked at 370 procedures in 2016 and stood at 154 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.
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.
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.
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. Duffy
How does Dr. Duffy's procedure volume compare to other Florida surgeons?
Dr. Duffy has performed 154 Medicare-verified joint replacement procedures. This is more than 2x the Florida average of 72 procedures per surgeon. Dr. Duffy ranks #55 out of 523 orthopedic surgeons in Florida.
What types of joint replacement does Dr. Duffy perform?
Dr. Duffy's Medicare data shows procedures in knee replacement (125 cases) and hip replacement (29 cases).
Are there other orthopedic surgeons near Dr. Duffy in Jacksonville?
Yes. There are 23 orthopedic surgeons in Jacksonville 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 Florida surgeons.
What does the Medicare data for Dr. Duffy 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. Duffy's total volume across all insurers at roughly 530 to 660 procedures against the 154 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. Duffy's procedure volume changed over time?
Dr. Duffy's Medicare-recorded volume peaked at 370 procedures in 2016 and was 154 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. Duffy perform more than one type of joint replacement?
Yes. Dr. Duffy's Medicare data shows procedures in knee replacement (125 cases), hip replacement (29 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Duffy affiliated with?
According to CMS facility affiliation data, Dr. Duffy is affiliated with Ascension St Vincent'S Southside, Baptist Medical Center - Beaches, Baptist Medical Center Jacksonville.
How does Dr. Duffy compare to other orthopedic surgeons in Jacksonville?
Among the 23 orthopedic surgeons in Jacksonville, Dr. Duffy ranks #5 by total Medicare procedure volume. The highest-volume surgeon in Jacksonville has 266 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Duffy practices?
Ascension St Vincent'S Southside (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Baptist Medical Center - Beaches (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Baptist Medical Center Jacksonville (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 Jacksonville, Florida
Dr. Duffy's 154 Medicare procedures are below the Jacksonville average of 172. The table below compares verified procedure volumes for orthopedic surgeons practicing in Jacksonville.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. John Redmond | 266 | Hip, Knee |
| Dr. Brett Frykberg | 194 | Hip, Knee |
| Dr. Phillip Bell | 171 | Hip, Knee |
| Dr. Cedric Ortiguera | 164 | Knee, Shoulder |
| Dr. William Pujadas | 133 | Hip, Knee, Shoulder |
| Dr. Luke Spencer-Gardner | 122 | Hip |
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.