Dr. Mark Ghilarducci, M.D.
Contact & Location
Oxnard, CA 93030
Dr. Mark Ghilarducci is a board-certified orthopedic surgeon practicing in Oxnard, California. Dr. Ghilarducci has performed 15 Medicare-verified knee replacements, ranking #418 in California.
In California, Dr. Ghilarducci performs below average in knee (15 vs 47 avg).
Dr. Ghilarducci's Medicare data shows a focused knee replacement practice with 15 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.
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. Ghilarducci extend back to 2016, covering 5 years of data. Over that period, recorded procedure volume increased from 11 to 15 in the most recent data, a 36% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Ghilarducci's 15 knee replacement procedures is below the national average of 45 among 6,599 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
Verified Case Volume Trends (2013-Current)
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. Ghilarducci Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Ghilarducci's Medicare-recorded procedure volume has trended upward over 5 years, increasing 36% from 11 procedures in 2016 to 15 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. Ghilarducci
How does Dr. Ghilarducci's procedure volume compare to other California surgeons?
Dr. Ghilarducci has performed 15 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. Ghilarducci ranks #526 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Ghilarducci perform?
Dr. Ghilarducci's reported Medicare volume is focused on knee replacement, with 15 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Ghilarducci 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. Ghilarducci 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. Ghilarducci's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 15 procedures shown here.
Has Dr. Ghilarducci's procedure volume changed over time?
Yes. Dr. Ghilarducci's Medicare-recorded volume has increased from 11 procedures in 2016 to 15 in the most recent data, a 36% increase over 5 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 17 procedures in 2021.
Which hospitals is Dr. Ghilarducci affiliated with?
According to CMS facility affiliation data, Dr. Ghilarducci is affiliated with St Johns Regional Medical Center.
How does Dr. Ghilarducci compare to other orthopedic surgeons in Oxnard?
Among the 4 orthopedic surgeons in Oxnard, Dr. Ghilarducci ranks #4 by total Medicare procedure volume. The highest-volume surgeon in Oxnard has 133 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Ghilarducci practices?
St Johns Regional Medical Center (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.
Other Orthopedic Surgeons in Oxnard, California
Dr. Ghilarducci's 15 Medicare procedures are below the Oxnard average of 51. The table below compares verified procedure volumes for orthopedic surgeons practicing in Oxnard.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. John Quinn | 133 | Hip, Knee |
| Dr. Behnam Sharareh | 42 | Shoulder |
| Dr. Andrew Jeffers | 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.