Dr. William Andersen, M.D.
Contact & Location
919-467-4992
Cary, NC 27518
Dr. Andersen performs more knee replacement procedures than 76% of orthopedic surgeons in North Carolina, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #54 of 228 ranked knee surgeons in North Carolina.
About Dr. Andersen
Practice. Dr. William Andersen is an orthopedic surgeon practicing in Cary, North Carolina. The latest annual CMS data records 58 knee replacements. That is #54 in North Carolina for knee replacement. Dr. Andersen also holds credentials in Sports Medicine. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 25 procedures a year to 58, up 132%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 58 procedures is above the national average of 45.
Local context. Cary has 7 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 | Knee Replacement |
|---|---|
| 2013 | 25 |
| 2014 | 18 |
| 2015 | 20 |
| 2016 | 13 |
| 2017 | 25 |
| 2018 | 21 |
| 2019 | 24 |
| 2020 | 52 |
| 2021 | 37 |
| 2022 | 47 |
| 2023 | 53 |
| 2024 | 58 |
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. 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. Andersen Compares
Procedure volume compared to the North Carolina state average.
Volume Trend Analysis
Dr. Andersen's Medicare-recorded procedure volume has trended upward over 12 years, increasing 132% from 25 procedures in 2013 to 58 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.
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.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
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. Andersen
How does Dr. Andersen's procedure volume compare to other North Carolina surgeons?
Dr. Andersen has performed 58 Medicare-verified joint replacement procedures. This is in line with the North Carolina average of 61 procedures per surgeon. Dr. Andersen ranks #107 out of 293 orthopedic surgeons in North Carolina.
What types of joint replacement does Dr. Andersen perform?
Dr. Andersen's reported Medicare volume is focused on knee replacement, with 58 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Andersen in Cary?
Yes. There are 7 orthopedic surgeons in Cary 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. Andersen 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, which puts Dr. Andersen's total volume across all insurers at roughly 210 to 250 procedures against the 58 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. Andersen's procedure volume changed over time?
Yes. Dr. Andersen's Medicare-recorded volume has increased from 25 procedures in 2013 to 58 in the most recent data, a 132% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 58 procedures in 2024.
Which hospitals is Dr. Andersen affiliated with?
According to CMS facility affiliation data, Dr. Andersen is affiliated with Rex Hospital.
How does Dr. Andersen compare to other orthopedic surgeons in Cary?
Among the 7 orthopedic surgeons in Cary, Dr. Andersen ranks #3 by total Medicare procedure volume. Dr. Andersen is among the highest-volume surgeons in Cary.
What are the quality ratings for hospitals where Dr. Andersen practices?
Rex Hospital (5 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 Cary, North Carolina
Dr. Andersen's 58 Medicare procedures are above the Cary average of 47. The table below compares verified procedure volumes for orthopedic surgeons practicing in Cary.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Stephen Struble | 67 | Hip, Knee |
| Dr. Demetri Economedes | 66 | Hip, Knee |
| Dr. Arvind Narayanan | 55 | Hip, Knee |
| Dr. Raymond Carroll | 32 | Shoulder |
| Dr. Adam Almaguer | 31 | Hip, Knee |
| Dr. Edouard Armour | 17 | 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.