Dr. John Quinn, M.D.
Contact & Location
805-988-9366
Oxnard, CA 93030
About Dr. Quinn
Dr. John Quinn is a board-certified orthopedic surgeon practicing in Oxnard, California. A Medicare provider since 2014, Dr. Quinn performed 85 Medicare-verified knee replacements (#70 in California) and 48 hip replacements in the latest annual CMS data, for a combined total of 133 procedures.
In California, Dr. Quinn performs above the state average in knee (85 vs 47), near the state average in hip (48 vs 41).
Dr. Quinn's reported Medicare volume is split between knee replacements (85 cases) and hip replacements (48 cases).
Oxnard is home to 4 orthopedic surgeons in the current Medicare dataset. Patients in the Oxnard area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Quinn extend back to 2019, covering 6 years of data. Over that period, recorded procedure volume increased from 40 to 133 in the most recent data, a 233% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,599 knee replacement surgeons tracked nationally, Dr. Quinn's 85 verified procedures is above the national average of 45.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 16 | 24 |
| 2020 | 35 | 33 |
| 2021 | 19 | 19 |
| 2022 | 23 | 50 |
| 2023 | 39 | 69 |
| 2024 | 48 | 85 |
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. Quinn Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Quinn's Medicare-recorded procedure volume has trended upward over 6 years, increasing 233% from 40 procedures in 2019 to 133 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. Quinn
How does Dr. Quinn's procedure volume compare to other California surgeons?
Dr. Quinn has performed 133 Medicare-verified joint replacement procedures. This is significantly above the California average of 68 procedures per surgeon. Dr. Quinn ranks #84 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Quinn perform?
Dr. Quinn's Medicare data shows procedures in knee replacement (85 cases) and hip replacement (48 cases).
Are there other orthopedic surgeons near Dr. Quinn in Oxnard?
Yes. There are 4 orthopedic surgeons in Oxnard 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 California surgeons.
What does the Medicare data for Dr. Quinn 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. Quinn's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 133 procedures shown here.
Has Dr. Quinn's procedure volume changed over time?
Yes. Dr. Quinn's Medicare-recorded volume has increased from 40 procedures in 2019 to 133 in the most recent data, a 233% increase over 6 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 133 procedures in 2024.
Does Dr. Quinn perform more than one type of joint replacement?
Yes. Dr. Quinn's Medicare data shows procedures in knee replacement (85 cases), hip replacement (48 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Quinn affiliated with?
According to CMS facility affiliation data, Dr. Quinn is affiliated with St Johns Regional Medical Center, Adventist Health Simi Valley.
How does Dr. Quinn compare to other orthopedic surgeons in Oxnard?
Among the 4 orthopedic surgeons in Oxnard, Dr. Quinn ranks #1 by total Medicare procedure volume. Dr. Quinn has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Quinn practices?
St Johns Regional Medical Center (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Adventist Health Simi Valley (2 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 Oxnard, California
Dr. Quinn's 133 Medicare procedures are above the Oxnard average of 51. The table below compares verified procedure volumes for orthopedic surgeons practicing in Oxnard.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Behnam Sharareh | 42 | Shoulder |
| Dr. Andrew Jeffers | 15 | Knee |
| Dr. Mark Ghilarducci | 15 | 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.