Dr. Adam Sassoon, M.D.
Contact & Location
310-319-1234
Los Angeles, CA 90095
Dr. Sassoon performs more knee replacement procedures than 59% of orthopedic surgeons in California, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #198 of 491 ranked knee surgeons in California.
About Dr. Sassoon
Practice. Dr. Adam Sassoon is a board-certified orthopedic surgeon practicing in Los Angeles, California. The latest annual CMS data records 38 knee replacements and 24 hip replacements, 62 procedures in all. That is #198 in California for knee replacement. A Medicare provider since 2007.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 29 procedures a year to 62, up 114%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 38 procedures is near the national average of 45.
Local context. Los Angeles has 34 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 | 13 | 16 |
| 2014 | 30 | 20 |
| 2015 | 16 | 0 |
| 2016 | 23 | 0 |
| 2017 | 22 | 22 |
| 2018 | 25 | 25 |
| 2019 | 26 | 30 |
| 2020 | 13 | 20 |
| 2021 | 25 | 25 |
| 2022 | 30 | 33 |
| 2023 | 25 | 37 |
| 2024 | 24 | 38 |
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. Sassoon Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Sassoon's Medicare-recorded procedure volume has trended upward over 12 years, increasing 114% from 29 procedures in 2013 to 62 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.
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 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. Sassoon
How does Dr. Sassoon's procedure volume compare to other California surgeons?
Dr. Sassoon has performed 62 Medicare-verified joint replacement procedures. This is in line with the California average of 68 procedures per surgeon. Dr. Sassoon ranks #225 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Sassoon perform?
Dr. Sassoon's Medicare data shows procedures in knee replacement (38 cases) and hip replacement (24 cases).
Are there other orthopedic surgeons near Dr. Sassoon in Los Angeles?
Yes. There are 34 orthopedic surgeons in Los Angeles 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. Sassoon 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. Sassoon's total volume across all insurers at roughly 210 to 260 procedures against the 62 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. Sassoon's procedure volume changed over time?
Yes. Dr. Sassoon's Medicare-recorded volume has increased from 29 procedures in 2013 to 62 in the most recent data, a 114% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 63 procedures in 2022.
Does Dr. Sassoon perform more than one type of joint replacement?
Yes. Dr. Sassoon's Medicare data shows procedures in knee replacement (38 cases), hip replacement (24 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Sassoon affiliated with?
According to CMS facility affiliation data, Dr. Sassoon is affiliated with Santa Monica - Ucla Med Ctr & Orthopaedic Hospital, Ronald Reagan Ucla Medical Center.
How does Dr. Sassoon compare to other orthopedic surgeons in Los Angeles?
Among the 34 orthopedic surgeons in Los Angeles, Dr. Sassoon ranks #6 by total Medicare procedure volume. The highest-volume surgeon in Los Angeles has 211 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Sassoon practices?
Santa Monica - Ucla Med Ctr & Orthopaedic Hospital (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Ronald Reagan Ucla Medical Center (4 out of 5 CMS stars, insufficient case volume for complication rate comparison). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Los Angeles, California
Dr. Sassoon's 62 Medicare procedures are below the Los Angeles average of 113. The table below compares verified procedure volumes for orthopedic surgeons practicing in Los Angeles.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. John Tiberi | 211 | Hip, Knee |
| Dr. Daniel Oakes | 192 | Hip, Knee |
| Dr. Micah Adamson | 98 | Hip, Knee |
| Dr. Vishal Hegde | 97 | Hip, Knee |
| Dr. Andrew Spitzer | 71 | Hip, Knee |
| Dr. Nathanael Heckmann | 57 | 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.