Dr. Shaun Peterson, M.D.
Contact & Location
520-784-6200
Tucson, AZ 85712
Dr. Peterson performs more knee replacement procedures than 38% of orthopedic surgeons in Arizona, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #94 of 152 ranked knee surgeons in Arizona.
About Dr. Peterson
Practice. Dr. Shaun Peterson is an orthopedic surgeon practicing in Tucson, Arizona. The latest annual CMS data records 27 knee replacements and 20 hip replacements, 47 procedures in all. That is #94 in Arizona for knee replacement. Dr. Peterson also holds credentials in Sports Medicine.
Trend. Medicare records run from 2013 to 2024, 11 years. Volume rose from 13 procedures a year to 47, up 262%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 27 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Tucson has 27 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 | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 13 |
| 2014 | 12 | 20 |
| 2015 | 30 | 16 |
| 2016 | 32 | 28 |
| 2017 | 39 | 21 |
| 2018 | 35 | 36 |
| 2019 | 33 | 30 |
| 2020 | 35 | 29 |
| 2021 | 11 | 0 |
| 2022 | 0 | 0 |
| 2023 | 17 | 16 |
| 2024 | 20 | 27 |
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. Peterson Compares
Procedure volume compared to the Arizona state average.
Volume Trend Analysis
Dr. Peterson's Medicare-recorded procedure volume has trended upward over 11 years, increasing 262% from 13 procedures in 2013 to 47 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.
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.
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 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. Peterson
How does Dr. Peterson's procedure volume compare to other Arizona surgeons?
Dr. Peterson has performed 47 Medicare-verified joint replacement procedures. The Arizona average is 72 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Peterson ranks #109 out of 191 orthopedic surgeons in Arizona.
What types of joint replacement does Dr. Peterson perform?
Dr. Peterson's Medicare data shows procedures in knee replacement (27 cases) and hip replacement (20 cases).
Are there other orthopedic surgeons near Dr. Peterson in Tucson?
Yes. There are 27 orthopedic surgeons in Tucson 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 Arizona surgeons.
What does the Medicare data for Dr. Peterson 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. Peterson's total volume across all insurers at roughly 160 to 200 procedures against the 47 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. Peterson's procedure volume changed over time?
Yes. Dr. Peterson's Medicare-recorded volume has increased from 13 procedures in 2013 to 47 in the most recent data, a 262% increase over 11 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 71 procedures in 2018.
Does Dr. Peterson perform more than one type of joint replacement?
Yes. Dr. Peterson's Medicare data shows procedures in knee replacement (27 cases), hip replacement (20 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Peterson affiliated with?
According to CMS facility affiliation data, Dr. Peterson is affiliated with St. Mary'S Hospital, Northwest Medical Center Sahuarita.
How does Dr. Peterson compare to other orthopedic surgeons in Tucson?
Among the 27 orthopedic surgeons in Tucson, Dr. Peterson ranks #15 by total Medicare procedure volume. The highest-volume surgeon in Tucson has 213 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Peterson practices?
St. Mary'S Hospital (3 out of 5 CMS stars, insufficient case volume for complication rate comparison); Northwest Medical Center Sahuarita (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 Tucson, Arizona
Dr. Peterson's 47 Medicare procedures are below the Tucson average of 148. The table below compares verified procedure volumes for orthopedic surgeons practicing in Tucson.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Russell Cohen | 213 | Hip, Knee |
| Dr. Michael Miller | 170 | Hip, Knee |
| Dr. John Wild | 169 | Hip, Knee |
| Dr. John Maltry | 160 | Hip, Knee |
| Dr. Edward Petrow | 145 | Hip, Knee |
| Dr. Chad Hills | 135 | 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.