Dr. William Duncan, MD
Contact & Location
417-875-3800
Springfield, MO 65807
About Dr. Duncan
Dr. William Duncan is a board-certified orthopedic surgeon practicing in Springfield, Missouri. A Medicare provider since 2006, Dr. Duncan completed 57 knee replacements (#38 in Missouri), 29 hip replacements, and 23 shoulder replacements in the latest annual CMS data, totaling 109 Medicare-verified procedures.
In Missouri, Dr. Duncan performs above the state average in knee (57 vs 42), near the state average in hip (29 vs 32), below the state average in shoulder (23 vs 31).
Dr. Duncan performs all three major joint replacement procedures — hip, knee, and shoulder — indicating a broad scope of orthopedic practice. The largest share is knee replacements (57 cases), followed by hip replacements (29) and shoulder replacements (23).
Springfield is home to 10 orthopedic surgeons in the current Medicare dataset. Patients in the Springfield area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Duncan extend back to 2013, covering 12 years of data. Over that period, recorded procedure volume increased from 76 to 109 in the most recent data, a 43% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,599 knee replacement surgeons tracked nationally, Dr. Duncan's 57 verified procedures is above the national average of 45.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement | Shoulder Replacement |
|---|---|---|---|
| 2013 | 0 | 51 | 25 |
| 2014 | 20 | 67 | 25 |
| 2015 | 29 | 80 | 32 |
| 2016 | 0 | 69 | 53 |
| 2017 | 21 | 50 | 38 |
| 2018 | 22 | 50 | 31 |
| 2019 | 19 | 66 | 22 |
| 2020 | 20 | 46 | 22 |
| 2021 | 26 | 50 | 35 |
| 2022 | 19 | 67 | 25 |
| 2023 | 0 | 65 | 16 |
| 2024 | 29 | 57 | 23 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims represent approximately 33–37% of all joint replacements performed nationally (source: CMS data, AJRR). This range estimates the surgeon's total practice volume across all payers. The verified Medicare count above is the definitive, audited figure.
How Dr. Duncan Compares
Procedure volume compared to the Missouri state average.
Volume Trend Analysis
Dr. Duncan's Medicare-recorded procedure volume has trended upward over 12 years, increasing 43% from 76 procedures in 2013 to 109 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.
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. Duncan
How does Dr. Duncan's procedure volume compare to other Missouri surgeons?
Dr. Duncan has performed 109 Medicare-verified joint replacement procedures. This is significantly above the Missouri average of 59 procedures per surgeon. Dr. Duncan ranks #29 out of 204 orthopedic surgeons in Missouri.
What types of joint replacement does Dr. Duncan perform?
Dr. Duncan performs all three major joint replacement procedures: knee replacement (57 cases), hip replacement (29 cases), shoulder replacement (23 cases). This breadth indicates a comprehensive orthopedic joint replacement practice.
Are there other orthopedic surgeons near Dr. Duncan in Springfield?
Yes. There are 10 orthopedic surgeons in Springfield 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 Missouri surgeons.
What does the Medicare data for Dr. Duncan represent?
The procedure counts shown are based on the most recent Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). This captures approximately 33–37% of all joint replacements performed nationally. Dr. Duncan's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 109 procedures shown here.
Has Dr. Duncan's procedure volume changed over time?
Yes. Dr. Duncan's Medicare-recorded volume has increased from 76 procedures in 2013 to 109 in the most recent data, a 43% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 141 procedures in 2015.
Does Dr. Duncan perform more than one type of joint replacement?
Yes. Dr. Duncan's Medicare data shows procedures in knee replacement (57 cases), hip replacement (29 cases), shoulder replacement (23 cases). Performing all three major joint replacements places Dr. Duncan among the 5% of orthopedic surgeons nationally who cover hip, knee, and shoulder arthroplasty.
Which hospitals is Dr. Duncan affiliated with?
According to CMS facility affiliation data, Dr. Duncan is affiliated with Cox Medical Centers, Cox Medical Center Branson, Cox Monett Hospital.
How does Dr. Duncan compare to other orthopedic surgeons in Springfield?
Among the 10 orthopedic surgeons in Springfield, Dr. Duncan ranks #3 by total Medicare procedure volume. Dr. Duncan is among the highest-volume surgeons in Springfield.
What are the quality ratings for hospitals where Dr. Duncan practices?
Cox Medical Centers (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Cox Medical Center Branson (4 out of 5 CMS stars, insufficient case volume for complication rate comparison). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Springfield, Missouri
Dr. Duncan's 109 Medicare procedures are below the Springfield average of 110. The table below compares verified procedure volumes for orthopedic surgeons practicing in Springfield.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Bradley Walz | 208 | Hip, Knee |
| Dr. Christopher Wester | 202 | Hip, Knee |
| Dr. Pierre Clothiaux | 75 | Knee |
| Dr. William Wester | 71 | Hip, Knee, Shoulder |
| Dr. Jonathan Crites | 65 | Shoulder |
| Dr. Ken Carpenter | 41 | 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.