Dr. Nathaniel Cohen, M.D.
Contact & Location
408-412-8100
Los Gatos, CA 95032
Dr. Cohen performs more shoulder replacement procedures than 15% of orthopedic surgeons in California, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #117 of 139 ranked shoulder surgeons in California.
About Dr. Cohen
Practice. Dr. Nathaniel Cohen is a board-certified orthopedic surgeon practicing in Los Gatos, California. The latest annual CMS data records 13 shoulder replacements. That is #117 in California for shoulder replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2016 to 2024, 5 years. Volume has held between 11 and 14 procedures a year.
National context. Among 2,217 shoulder replacement surgeons tracked nationally, 13 procedures is below the national average of 29. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Los Gatos has 5 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 | Shoulder Replacement |
|---|---|
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 14 |
| 2017 | 11 |
| 2018 | 13 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 13 |
| 2023 | 0 |
| 2024 | 13 |
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 29% to 37% for shoulder 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. Cohen Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Cohen's procedure volume has been consistent across 5 years of Medicare data, ranging from 11 to 14 procedures per year. This stability suggests a well-established joint replacement practice.
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 Shoulder Replacement
If you are considering shoulder replacement surgery, these evidence-based guides can help you prepare and recover:
Evidence-based exercises and lifestyle adjustments that can improve surgical outcomes and speed recovery when started weeks before your procedure.
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 Bundled Payment Programs for Joint ReplacementHow bundled payment models affect your joint replacement costs and care coordination, and what it means for hospital and surgeon selection.
Shoulder Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after shoulder replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full shoulder replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Cohen
How does Dr. Cohen's procedure volume compare to other California surgeons?
Dr. Cohen has performed 13 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. Cohen ranks #568 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Cohen perform?
Dr. Cohen's reported Medicare volume is focused on shoulder replacement, with 13 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Cohen in Los Gatos?
Yes. There are 5 orthopedic surgeons in Los Gatos 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. Cohen 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 29% to 37% for shoulder replacement, which puts Dr. Cohen's total volume across all insurers at roughly 40 to 40 procedures against the 13 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. Cohen's procedure volume changed over time?
Dr. Cohen's procedure volume has been relatively stable over 5 years of Medicare data, ranging from 11 to 14 procedures per year between 2016 and 2024. Consistent volume over multiple years reflects a steady joint replacement practice.
Which hospitals is Dr. Cohen affiliated with?
According to CMS facility affiliation data, Dr. Cohen is affiliated with Good Samaritan Hospital, El Camino Health.
How does Dr. Cohen compare to other orthopedic surgeons in Los Gatos?
Among the 5 orthopedic surgeons in Los Gatos, Dr. Cohen ranks #5 by total Medicare procedure volume. The highest-volume surgeon in Los Gatos has 101 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Cohen practices?
Good Samaritan Hospital (2 out of 5 CMS stars, hip/knee complication rate similar to national average); El Camino Health (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 Los Gatos, California
Dr. Cohen's 13 Medicare procedures are below the Los Gatos average of 39. The table below compares verified procedure volumes for orthopedic surgeons practicing in Los Gatos.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Raj Kullar | 101 | Hip, Knee, Shoulder |
| Dr. Sanaz Hariri | 32 | Knee |
| Dr. Terence Delaney | 27 | Hip, Knee |
| Dr. Ian Barrett | 24 | Knee, Shoulder |
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.