Dr. Philip Karpos, M.D.
Contact & Location
615-329-6600
Nashville, TN 37209
Dr. Karpos performs more knee replacement procedures than 86% of orthopedic surgeons in Tennessee, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #24 of 176 ranked knee surgeons in Tennessee.
About Dr. Karpos
Practice. Dr. Philip Karpos is a board-certified orthopedic surgeon practicing in Nashville, Tennessee. The latest annual CMS data records 78 knee replacements and 34 hip replacements, 112 procedures in all. That is #24 in Tennessee for knee replacement. A Medicare provider since 2005.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume has held between 112 and 156 procedures a year.
National context. Among 6,612 knee replacement surgeons tracked nationally, 78 procedures is above the national average of 45.
Local context. Nashville has 37 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 | 54 | 72 |
| 2014 | 55 | 73 |
| 2015 | 45 | 93 |
| 2016 | 36 | 111 |
| 2017 | 49 | 67 |
| 2018 | 62 | 94 |
| 2019 | 39 | 95 |
| 2020 | 32 | 80 |
| 2021 | 47 | 83 |
| 2022 | 29 | 99 |
| 2023 | 37 | 105 |
| 2024 | 34 | 78 |
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. Karpos Compares
Procedure volume compared to the Tennessee state average.
Volume Trend Analysis
Dr. Karpos's procedure volume has been consistent across 12 years of Medicare data, ranging from 112 to 156 procedures per year. This stability suggests a well-established joint replacement practice.
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. Karpos
How does Dr. Karpos's procedure volume compare to other Tennessee surgeons?
Dr. Karpos has performed 112 Medicare-verified joint replacement procedures. This is significantly above the Tennessee average of 65 procedures per surgeon. Dr. Karpos ranks #35 out of 219 orthopedic surgeons in Tennessee.
What types of joint replacement does Dr. Karpos perform?
Dr. Karpos's Medicare data shows procedures in knee replacement (78 cases) and hip replacement (34 cases).
Are there other orthopedic surgeons near Dr. Karpos in Nashville?
Yes. There are 37 orthopedic surgeons in Nashville 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 Tennessee surgeons.
What does the Medicare data for Dr. Karpos 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. Karpos's total volume across all insurers at roughly 380 to 480 procedures against the 112 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. Karpos's procedure volume changed over time?
Dr. Karpos's procedure volume has been relatively stable over 12 years of Medicare data, ranging from 112 to 156 procedures per year between 2013 and 2024. Consistent volume over multiple years reflects a steady joint replacement practice.
Does Dr. Karpos perform more than one type of joint replacement?
Yes. Dr. Karpos's Medicare data shows procedures in knee replacement (78 cases), hip replacement (34 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Karpos affiliated with?
According to CMS facility affiliation data, Dr. Karpos is affiliated with Ascension Saint Thomas Hospital, Saint Thomas Hospital For Specialty Surgery, Ascension Saint Thomas Three Rivers.
How does Dr. Karpos compare to other orthopedic surgeons in Nashville?
Among the 37 orthopedic surgeons in Nashville, Dr. Karpos ranks #8 by total Medicare procedure volume. The highest-volume surgeon in Nashville has 265 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Karpos practices?
Ascension Saint Thomas Hospital (3 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 Nashville, Tennessee
Dr. Karpos's 112 Medicare procedures are below the Nashville average of 152. The table below compares verified procedure volumes for orthopedic surgeons practicing in Nashville.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. David Deboer | 265 | Hip, Knee |
| Dr. Jeffrey Hodrick | 155 | Hip, Knee |
| Dr. Gregory Raab | 151 | Hip, Knee |
| Dr. Jefferson Morrison | 136 | Hip, Knee |
| Dr. Wesley Mayes | 125 | Hip, Knee |
| Dr. William Carpenter | 120 | Hip, 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.