Dr. Gregory Duff, M.D.
Dr. Gregory Duff is a board-certified orthopedic surgeon practicing in Silverdale, Washington. Dr. Duff has performed 17 Medicare-verified shoulder replacements, ranking #41 in Washington.
Dr. Duff has recorded 17 Medicare fee-for-service procedures. Medicare data represents approximately one-third of all joint replacements nationwide, so these counts reflect only a portion of a surgeon's full practice. Washington has 202 orthopedic surgeons in the current dataset.
Dr. Duff's Medicare data shows a focused shoulder replacement practice with 17 verified procedures in 2023. Surgeons who concentrate on a single procedure type often develop deep procedural expertise, though total practice volume may include additional procedures not captured in Medicare fee-for-service data.
Silverdale is home to 6 orthopedic surgeons in the current Medicare dataset. Patients in the Silverdale area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Duff extend back to 2020, covering 4 years of data. Over that period, recorded procedure volume increased from 12 to 17 in 2023, a 42% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Duff's Medicare volume of 17 procedures is below the national median of 44. Medicare data captures roughly a third of all joint replacements, so actual practice volume across all payers is likely higher.
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.
Preparing for Shoulder Replacement?
Browse surgeon-recommended, highly-rated recovery products — wound care, cold therapy, mobility aids, and more.
Browse Recovery ProductsContact & Location
Silverdale, WA 98383
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Duff's Medicare-recorded procedure volume has trended upward over 4 years, increasing 42% from 12 procedures in 2020 to 17 in 2023.
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.
Frequently Asked Questions About Dr. Duff
How does Dr. Duff's procedure volume compare to other Washington surgeons?
Dr. Duff has performed 17 Medicare-verified joint replacement procedures. The Washington average is 59 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Duff ranks #176 out of 202 orthopedic surgeons in Washington.
What types of joint replacement does Dr. Duff perform?
Dr. Duff's reported Medicare volume is focused on shoulder replacement, with 17 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Duff in Silverdale?
Yes. There are 6 orthopedic surgeons in Silverdale 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 Washington surgeons.
What does the Medicare data for Dr. Duff 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. Duff's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 17 procedures shown here.
Has Dr. Duff's procedure volume changed over time?
Yes. Dr. Duff's Medicare-recorded volume has increased from 12 procedures in 2020 to 17 in 2023, a 42% increase over 4 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 17 procedures in 2023.
Which hospitals is Dr. Duff affiliated with?
According to CMS facility affiliation data, Dr. Duff is affiliated with St Michael Medical Center, Olympic Medical Center.
How does Dr. Duff compare to other orthopedic surgeons in Silverdale?
Among the 6 orthopedic surgeons in Silverdale, Dr. Duff ranks #6 by total Medicare procedure volume. The highest-volume surgeon in Silverdale has 182 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Duff practices?
St Michael Medical Center (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Olympic Medical Center (3 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 Silverdale, Washington
Dr. Duff's 17 Medicare procedures are below the Silverdale average of 82. The table below compares verified procedure volumes for orthopedic surgeons practicing in Silverdale.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Bradley Watters | 182 | Hip, Knee |
| Dr. Omar Abdul-Hadi | 135 | Hip, Knee |
| Dr. Dawson Brown | 72 | Shoulder |
| Dr. Erin Moyer | 51 | Hip, Knee |
| Dr. Christopher Rankin | 36 | Shoulder |