Dr. John Mason, MD
Contact & Location
704-323-2000
Charlotte, NC 28207
Dr. Mason performs more knee replacement procedures than 30% of orthopedic surgeons in North Carolina, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #158 of 228 ranked knee surgeons in North Carolina.
About Dr. Mason
Dr. John Mason is a board-certified orthopedic surgeon practicing in Charlotte, North Carolina. A Medicare provider since 2005, Dr. Mason performed 21 Medicare-verified knee replacements (#158 in North Carolina) and 13 hip replacements in the latest annual CMS data, for a combined total of 34 procedures.
In North Carolina, Dr. Mason performs below the state average in knee (21 vs 44), below the state average in hip (13 vs 33).
Dr. Mason's reported Medicare volume is split between knee replacements (21 cases) and hip replacements (13 cases).
Beyond general orthopedic surgery, Dr. Mason holds additional credentials in Adult Reconstructive Orthopaedic Surgery, reflecting subspecialty training that may benefit patients with complex joint conditions.
Charlotte is home to 32 orthopedic surgeons in the current Medicare dataset. Patients in the Charlotte area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Mason's Medicare data spans 12 years, beginning in 2013. Volume peaked at 186 procedures in 2018 before settling at 34 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Dr. Mason's 21 knee replacement procedures is below the national average of 45 among 6,599 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 62 | 73 |
| 2014 | 84 | 63 |
| 2015 | 83 | 59 |
| 2016 | 68 | 64 |
| 2017 | 85 | 83 |
| 2018 | 85 | 101 |
| 2019 | 80 | 84 |
| 2020 | 82 | 82 |
| 2021 | 95 | 72 |
| 2022 | 98 | 77 |
| 2023 | 87 | 93 |
| 2024 | 13 | 21 |
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. Mason Compares
Procedure volume compared to the North Carolina state average.
Volume Trend Analysis
Dr. Mason's recorded volume peaked at 186 procedures in 2018 and stood at 34 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.
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.
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.
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. Mason
How does Dr. Mason's procedure volume compare to other North Carolina surgeons?
Dr. Mason has performed 34 Medicare-verified joint replacement procedures. The North Carolina average is 61 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Mason ranks #179 out of 293 orthopedic surgeons in North Carolina.
What types of joint replacement does Dr. Mason perform?
Dr. Mason's Medicare data shows procedures in knee replacement (21 cases) and hip replacement (13 cases).
Are there other orthopedic surgeons near Dr. Mason in Charlotte?
Yes. There are 32 orthopedic surgeons in Charlotte 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 North Carolina surgeons.
What does the Medicare data for Dr. Mason 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. Mason's total volume across all insurers at roughly 110 to 140 procedures against the 34 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. Mason's procedure volume changed over time?
Dr. Mason's Medicare-recorded volume peaked at 186 procedures in 2018 and was 34 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. Mason perform more than one type of joint replacement?
Yes. Dr. Mason's Medicare data shows procedures in knee replacement (21 cases), hip replacement (13 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Mason affiliated with?
According to CMS facility affiliation data, Dr. Mason is affiliated with Carolinas Medical Center/Behav Health, Novant Health Presbyterian Medical Center.
How does Dr. Mason compare to other orthopedic surgeons in Charlotte?
Among the 32 orthopedic surgeons in Charlotte, Dr. Mason ranks #25 by total Medicare procedure volume. The highest-volume surgeon in Charlotte has 293 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Mason practices?
Carolinas Medical Center/Behav Health (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Novant Health Presbyterian Medical Center (4 out of 5 CMS stars, hip/knee complication rate better than national average). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Charlotte, North Carolina
Dr. Mason's 34 Medicare procedures are below the Charlotte average of 183. The table below compares verified procedure volumes for orthopedic surgeons practicing in Charlotte.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Howard Homesley | 293 | Hip, Knee |
| Dr. Ronald Singer | 226 | Hip, Knee |
| Dr. Omar Behery | 212 | Hip, Knee |
| Dr. Keith Fehring | 193 | Hip, Knee |
| Dr. Benjamin Wooster | 165 | Hip, Knee |
| Dr. John Masonis | 160 | 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.