Dr. Jeffrey Zarin, M.D.
Contact & Location
310-582-7474
Santa Monica, CA 90404
Boston, MA 02215
Dr. Zarin performs more knee replacement procedures than 93% of orthopedic surgeons in California, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #34 of 491 ranked knee surgeons in California.
About Dr. Zarin
Practice. Dr. Jeffrey Zarin is a board-certified orthopedic surgeon practicing in Santa Monica, California. The latest annual CMS data records 122 knee replacements and 51 hip replacements, 173 procedures in all. That is #34 in California for knee replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 11 years. Volume rose from 82 procedures a year to 173, up 111%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 122 procedures is more than 2x the national average of 45.
Local context. Santa Monica has 11 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 22 | 60 |
| 2014 | 27 | 56 |
| 2015 | 27 | 69 |
| 2016 | 21 | 52 |
| 2017 | 28 | 45 |
| 2018 | 31 | 61 |
| 2019 | 0 | 0 |
| 2020 | 13 | 11 |
| 2021 | 47 | 47 |
| 2022 | 48 | 69 |
| 2023 | 46 | 103 |
| 2024 | 51 | 122 |
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. Zarin Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Zarin's Medicare-recorded procedure volume has trended upward over 11 years, increasing 111% from 82 procedures in 2013 to 173 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.
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. Zarin
How does Dr. Zarin's procedure volume compare to other California surgeons?
Dr. Zarin has performed 173 Medicare-verified joint replacement procedures. This is more than 2x the California average of 68 procedures per surgeon. Dr. Zarin ranks #54 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Zarin perform?
Dr. Zarin's Medicare data shows procedures in knee replacement (122 cases) and hip replacement (51 cases).
Are there other orthopedic surgeons near Dr. Zarin in Santa Monica?
Yes. There are 11 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. Zarin 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. Zarin's total volume across all insurers at roughly 590 to 730 procedures against the 173 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. Zarin's procedure volume changed over time?
Yes. Dr. Zarin's Medicare-recorded volume has increased from 82 procedures in 2013 to 173 in the most recent data, a 111% increase over 11 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 173 procedures in 2024.
Does Dr. Zarin perform more than one type of joint replacement?
Yes. Dr. Zarin's Medicare data shows procedures in knee replacement (122 cases), hip replacement (51 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Zarin affiliated with?
According to CMS facility affiliation data, Dr. Zarin is affiliated with Saint John'S Health Center, Cedar-Sinai Marina Del Rey Hospital.
How does Dr. Zarin compare to other orthopedic surgeons in Santa Monica?
Among the 11 orthopedic surgeons in Santa Monica, Dr. Zarin ranks #1 by total Medicare procedure volume. Dr. Zarin has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Zarin practices?
Saint John'S Health Center (4 out of 5 CMS stars, hip/knee complication rate better than national average); Cedar-Sinai Marina Del Rey Hospital (4 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. Zarin's 173 Medicare procedures are above the Santa Monica average of 88. The table below compares verified procedure volumes for orthopedic surgeons practicing in Santa Monica.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Umesh Bhagia | 156 | Hip, Knee, Shoulder |
| Dr. Michael Gerhardt | 105 | Hip |
| Dr. Alexandra Stavrakis | 69 | Hip, Knee |
| Dr. Kevin Ehrhart | 46 | Knee |
| Dr. Ryan Bennett | 34 | Knee |
| Dr. Kevin Ilo | 33 | Hip, 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.