Dr. Michael Gerhardt, M.D.
Contact & Location
310-829-2663
Santa Monica, CA 90404
Dr. Gerhardt performs more hip replacement procedures than 93% of orthopedic surgeons in California, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #24 of 348 ranked hip surgeons in California.
About Dr. Gerhardt
Practice. Dr. Michael Gerhardt is a board-certified orthopedic surgeon practicing in Santa Monica, California. The latest annual CMS data records 105 hip replacements. That is #24 in California for hip replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2015 to 2024, 10 years. Volume rose from 15 procedures a year to 105, up 600%.
National context. Among 4,542 hip replacement surgeons tracked nationally, 105 procedures is more than 2x the national average of 36. That is #133 nationally.
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 |
|---|---|
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 15 |
| 2016 | 23 |
| 2017 | 29 |
| 2018 | 43 |
| 2019 | 48 |
| 2020 | 38 |
| 2021 | 48 |
| 2022 | 49 |
| 2023 | 67 |
| 2024 | 105 |
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 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. Gerhardt Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Gerhardt's Medicare-recorded procedure volume has trended upward over 10 years, increasing 600% from 15 procedures in 2015 to 105 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 Hip Replacement
If you are considering hip replacement surgery, these evidence-based guides can help you prepare and recover:
Understanding the progression from conservative treatments to surgical intervention, and how to determine when hip replacement becomes the right choice.
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.
Rehabilitation Roadmap: Your Complete Recovery GuideA structured physical therapy progression from the first post-op exercises through full strength and mobility restoration over 3 to 6 months.
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.
Hip Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after hip replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full hip replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Gerhardt
How does Dr. Gerhardt's procedure volume compare to other California surgeons?
Dr. Gerhardt has performed 105 Medicare-verified joint replacement procedures. This is significantly above the California average of 68 procedures per surgeon. Dr. Gerhardt ranks #103 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Gerhardt perform?
Dr. Gerhardt's reported Medicare volume is focused on hip replacement, with 105 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Gerhardt 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. Gerhardt 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 25% to 33% for hip replacement, which puts Dr. Gerhardt's total volume across all insurers at roughly 320 to 420 procedures against the 105 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. Gerhardt's procedure volume changed over time?
Yes. Dr. Gerhardt's Medicare-recorded volume has increased from 15 procedures in 2015 to 105 in the most recent data, a 600% increase over 10 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 105 procedures in 2024.
Which hospitals is Dr. Gerhardt affiliated with?
According to CMS facility affiliation data, Dr. Gerhardt is affiliated with Saint John'S Health Center, Cedar-Sinai Marina Del Rey Hospital, Cedars-Sinai Medical Center.
How does Dr. Gerhardt compare to other orthopedic surgeons in Santa Monica?
Among the 11 orthopedic surgeons in Santa Monica, Dr. Gerhardt ranks #3 by total Medicare procedure volume. Dr. Gerhardt is among the highest-volume surgeons in Santa Monica.
What are the quality ratings for hospitals where Dr. Gerhardt 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); 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. Gerhardt's 105 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. Jeffrey Zarin | 173 | Hip, Knee |
| Dr. Umesh Bhagia | 156 | Hip, Knee, Shoulder |
| 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.