Dr. Jason Hofer, MD
Contact & Location
805-641-6415
Ventura, CA 93003
Dr. Hofer performs more knee replacement procedures than 91% of orthopedic surgeons in California, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #42 of 491 ranked knee surgeons in California.
About Dr. Hofer
Dr. Jason Hofer is a board-certified orthopedic surgeon practicing in Ventura, California. A Medicare provider since 2007, Dr. Hofer performed 115 Medicare-verified knee replacements (#42 in California) and 83 hip replacements in the latest annual CMS data, for a combined total of 198 procedures.
In California, Dr. Hofer performs well above the state average in knee (115 vs 47), well above the state average in hip (83 vs 41).
Dr. Hofer's reported Medicare volume is split between knee replacements (115 cases) and hip replacements (83 cases).
Ventura is home to 8 orthopedic surgeons in the current Medicare dataset. Patients in the Ventura area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Hofer extend back to 2014, covering 11 years of data. Over that period, recorded procedure volume increased from 23 to 198 in the most recent data, a 761% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,612 knee replacement surgeons tracked nationally, Dr. Hofer's 115 verified procedures is more than 2x the national average of 45.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 0 |
| 2014 | 11 | 12 |
| 2015 | 25 | 29 |
| 2016 | 35 | 50 |
| 2017 | 51 | 78 |
| 2018 | 65 | 80 |
| 2019 | 82 | 79 |
| 2020 | 67 | 72 |
| 2021 | 72 | 80 |
| 2022 | 69 | 108 |
| 2023 | 82 | 126 |
| 2024 | 83 | 115 |
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. Hofer Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Hofer's Medicare-recorded procedure volume has trended upward over 11 years, increasing 761% from 23 procedures in 2014 to 198 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.
Recovery Timeline: Week-by-Week ExpectationsA detailed week-by-week guide covering pain levels, mobility milestones, physical therapy progression, and when to expect a return to daily activities.
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. Hofer
How does Dr. Hofer's procedure volume compare to other California surgeons?
Dr. Hofer has performed 198 Medicare-verified joint replacement procedures. This is more than 2x the California average of 68 procedures per surgeon. Dr. Hofer ranks #42 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Hofer perform?
Dr. Hofer's Medicare data shows procedures in knee replacement (115 cases) and hip replacement (83 cases).
Are there other orthopedic surgeons near Dr. Hofer in Ventura?
Yes. There are 8 orthopedic surgeons in Ventura 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. Hofer 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. Hofer's total volume across all insurers at roughly 660 to 830 procedures against the 198 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. Hofer's procedure volume changed over time?
Yes. Dr. Hofer's Medicare-recorded volume has increased from 23 procedures in 2014 to 198 in the most recent data, a 761% increase over 11 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 208 procedures in 2023.
Does Dr. Hofer perform more than one type of joint replacement?
Yes. Dr. Hofer's Medicare data shows procedures in knee replacement (115 cases), hip replacement (83 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Hofer affiliated with?
According to CMS facility affiliation data, Dr. Hofer is affiliated with Community Memorial Hospital - Ventura, St Johns Regional Medical Center, Ventura County Medical Center.
How does Dr. Hofer compare to other orthopedic surgeons in Ventura?
Among the 8 orthopedic surgeons in Ventura, Dr. Hofer ranks #1 by total Medicare procedure volume. Dr. Hofer has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Hofer practices?
Community Memorial Hospital - Ventura (4 out of 5 CMS stars, hip/knee complication rate similar to national average); St Johns Regional Medical Center (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Ventura County Medical Center (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 Ventura, California
Dr. Hofer's 198 Medicare procedures are above the Ventura average of 56. The table below compares verified procedure volumes for orthopedic surgeons practicing in Ventura.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Thomas Golden | 64 | Hip, Knee |
| Dr. John Burge | 39 | Hip, Knee |
| Dr. Stephan Sweet | 33 | Knee, Shoulder |
| Dr. Petros Frousiakis | 24 | Hip, Knee |
| Dr. Robert Mazurek | 17 | Knee |
| Dr. Mary Ragsdale | 16 | 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.