Dr. Mary Ragsdale, M.D.
Contact & Location
805-652-6150
Ventura, CA 93003
Dr. Ragsdale performs more knee replacement procedures than 19% of orthopedic surgeons in California, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #396 of 491 ranked knee surgeons in California.
About Dr. Ragsdale
Dr. Mary Ragsdale is a board-certified orthopedic surgeon practicing in Ventura, California. A Medicare provider since 2009, Dr. Ragsdale performed 16 Medicare-verified knee replacements in the latest annual CMS data, ranking #396 in California.
In California, Dr. Ragsdale performs below the state average in knee (16 vs 47).
Dr. Ragsdale's Medicare data shows a focused knee replacement practice with 16 verified procedures. 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.
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. Ragsdale extend back to 2018, covering 4 years of data. Over that period, recorded procedure volume increased from 12 to 16 in the most recent data, a 33% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Ragsdale's 16 knee replacement procedures is below the national average of 45 among 6,612 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
Verified Case Volume Trends (2013-Current)
| Year | Knee Replacement |
|---|---|
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 0 |
| 2017 | 0 |
| 2018 | 12 |
| 2019 | 14 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 16 |
| 2024 | 16 |
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. 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. Ragsdale Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Ragsdale's Medicare-recorded procedure volume has trended upward over 4 years, increasing 33% from 12 procedures in 2018 to 16 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.
Home Safety: Creating Your Recovery SanctuaryRoom-by-room modifications, equipment recommendations, and fall-prevention strategies to prepare your home for a safe post-surgical recovery.
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. Ragsdale
How does Dr. Ragsdale's procedure volume compare to other California surgeons?
Dr. Ragsdale has performed 16 Medicare-verified joint replacement procedures. The California average is 68 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Ragsdale ranks #506 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Ragsdale perform?
Dr. Ragsdale's reported Medicare volume is focused on knee replacement, with 16 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Ragsdale 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. Ragsdale 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, which puts Dr. Ragsdale's total volume across all insurers at roughly 60 to 70 procedures against the 16 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. Ragsdale's procedure volume changed over time?
Yes. Dr. Ragsdale's Medicare-recorded volume has increased from 12 procedures in 2018 to 16 in the most recent data, a 33% increase over 4 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 16 procedures in 2023.
Which hospitals is Dr. Ragsdale affiliated with?
According to CMS facility affiliation data, Dr. Ragsdale is affiliated with Ventura County Medical Center.
How does Dr. Ragsdale compare to other orthopedic surgeons in Ventura?
Among the 8 orthopedic surgeons in Ventura, Dr. Ragsdale ranks #7 by total Medicare procedure volume. The highest-volume surgeon in Ventura has 198 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Ragsdale practices?
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. Ragsdale's 16 Medicare procedures are below the Ventura average of 56. The table below compares verified procedure volumes for orthopedic surgeons practicing in Ventura.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Jason Hofer | 198 | Hip, Knee |
| 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 |
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.