Dr. Derek Riley, D.O.
Contact & Location
503-769-8470
Stayton, OR 97383
Dr. Riley performs more knee replacement procedures than 7% of orthopedic surgeons in Oregon, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #74 of 80 ranked knee surgeons in Oregon.
About Dr. Riley
Practice. Dr. Derek Riley is a board-certified orthopedic surgeon practicing in Stayton, Oregon. The latest annual CMS data records 13 knee replacements and 11 shoulder replacements, 24 procedures in all. That is #74 in Oregon for knee replacement. A Medicare provider since 2010.
Trend. Medicare records run from 2019 to 2024, 6 years. Volume has held between 11 and 24 procedures a year.
National context. Among 6,612 knee replacement surgeons tracked nationally, 13 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Verified Case Volume Trends (2013-Current)
| Year | Knee Replacement | Shoulder Replacement |
|---|---|---|
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 24 | 0 |
| 2020 | 11 | 0 |
| 2021 | 20 | 0 |
| 2022 | 24 | 0 |
| 2023 | 13 | 0 |
| 2024 | 13 | 11 |
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, 29% to 37% for shoulder 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. Riley Compares
Procedure volume compared to the Oregon state average.
Volume Trend Analysis
Dr. Riley's procedure volume has been consistent across 6 years of Medicare data, ranging from 11 to 24 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.
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.
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.
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. Riley
How does Dr. Riley's procedure volume compare to other Oregon surgeons?
Dr. Riley has performed 24 Medicare-verified joint replacement procedures. The Oregon average is 63 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Riley ranks #80 out of 101 orthopedic surgeons in Oregon.
What types of joint replacement does Dr. Riley perform?
Dr. Riley's Medicare data shows procedures in knee replacement (13 cases) and shoulder replacement (11 cases).
Where is Dr. Riley's practice located?
Dr. Riley practices in Stayton, Oregon. The office is located at 1377 N 10th Ave, Stayton, OR 97383. Patients in the surrounding area can consult Dr. Riley for joint replacement evaluation.
What does the Medicare data for Dr. Riley 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, 29% to 37% for shoulder replacement, which puts Dr. Riley's total volume across all insurers at roughly 80 to 90 procedures against the 24 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. Riley's procedure volume changed over time?
Dr. Riley's procedure volume has been relatively stable over 6 years of Medicare data, ranging from 11 to 24 procedures per year between 2019 and 2024. Consistent volume over multiple years reflects a steady joint replacement practice.
Does Dr. Riley perform more than one type of joint replacement?
Yes. Dr. Riley's Medicare data shows procedures in knee replacement (13 cases), shoulder replacement (11 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Riley affiliated with?
According to CMS facility affiliation data, Dr. Riley is affiliated with Santiam Hospital & Clinics, Salem Hospital.
What are the quality ratings for hospitals where Dr. Riley practices?
Santiam Hospital & Clinics (2 out of 5 CMS stars, insufficient case volume for complication rate comparison); Salem 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.
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.