Knee
Dr. Kevin Ehrhart, M.D.
Dr. Kevin Ehrhart is a board-certified orthopedic surgeon practicing in Santa Monica, California. A Medicare provider since 2006, Dr. Ehrhart has performed 43 Medicare-verified knee replacements, ranking #163 in California.
In California, Dr. Ehrhart performs near average in knee (43 vs 45 avg).
Dr. Ehrhart's Medicare data shows a focused knee replacement practice with 43 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.
Santa Monica is home to 9 orthopedic surgeons in the current Medicare dataset. Patients in the Santa Monica area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Ehrhart's Medicare data spans 11 years, beginning in 2013. Volume peaked at 84 procedures in 2017 before settling at 43 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Among 6,720 knee replacement surgeons tracked nationally, Dr. Ehrhart's 43 verified procedures is near the national average of 45.
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. Ehrhart Compares
Procedure volume compared to the California state average.
Contact & Location
Santa Monica, CA 90404
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Ehrhart's recorded volume peaked at 84 procedures in 2017 and stood at 43 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.
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.
What to Expect on the Day of SurgeryA step-by-step walkthrough of your surgical day, from pre-op preparation through anesthesia, the procedure itself, and the first hours of recovery.
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 Coverage for Joint ReplacementWhat Medicare Part A and Part B cover for joint replacement surgery, including hospital stays, surgeon fees, anesthesia, and physical therapy.
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. Ehrhart
How does Dr. Ehrhart's procedure volume compare to other California surgeons?
Dr. Ehrhart has performed 43 Medicare-verified joint replacement procedures. The California average is 65 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Ehrhart ranks #298 out of 608 orthopedic surgeons in California.
What types of joint replacement does Dr. Ehrhart perform?
Dr. Ehrhart's reported Medicare volume is focused on knee replacement, with 43 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Ehrhart in Santa Monica?
Yes. There are 9 orthopedic surgeons in Santa Monica 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. Ehrhart 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. Ehrhart's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 43 procedures shown here.
Has Dr. Ehrhart's procedure volume changed over time?
Dr. Ehrhart's Medicare-recorded volume peaked at 84 procedures in 2017 and was 43 in the most recent data. Volume fluctuations can reflect changes in payer mix, practice focus, or Medicare reporting rather than a change in overall surgical activity.
Which hospitals is Dr. Ehrhart affiliated with?
According to CMS facility affiliation data, Dr. Ehrhart is affiliated with Saint John'S Health Center, Cedars-Sinai Medical Center.
How does Dr. Ehrhart compare to other orthopedic surgeons in Santa Monica?
Among the 9 orthopedic surgeons in Santa Monica, Dr. Ehrhart ranks #6 by total Medicare procedure volume. The highest-volume surgeon in Santa Monica has 179 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Ehrhart practices?
Saint John'S Health Center (4 out of 5 CMS stars, hip/knee complication rate better than national average); Cedars-Sinai Medical Center (5 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 Santa Monica, California
Dr. Ehrhart's 43 Medicare procedures are below the Santa Monica average of 85. The table below compares verified procedure volumes for orthopedic surgeons practicing in Santa Monica.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Umesh Bhagia | 179 | Hip, Knee |
| Dr. Jeffrey Zarin | 149 | Hip, Knee |
| Dr. Alexandra Stavrakis | 72 | Hip, Knee |
| Dr. Michael Gerhardt | 67 | Hip |
| Dr. Ryan Stancil | 51 | Hip, Knee |
| Dr. Andrew Jensen | 37 | Shoulder |
Patient Reviews & Ratings
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