Dr. Robert Cash, M.D.
Contact & Location
209-571-5071
Modesto, CA 95355
Lincoln City, OR 97367
Newport, OR 97365
Dr. Cash performs more knee replacement procedures than 29% of orthopedic surgeons in California, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #347 of 491 ranked knee surgeons in California.
About Dr. Cash
Practice. Dr. Robert Cash is a board-certified orthopedic surgeon practicing in Modesto, California. The latest annual CMS data records 20 knee replacements and 13 hip replacements, 33 procedures in all. That is #347 in California for knee replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 24 procedures a year to 33, up 38%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 20 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Modesto has 10 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist. Dr. Cash also holds hospital privileges in OR and CA, a practice that extends beyond California.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 24 |
| 2014 | 0 | 20 |
| 2015 | 12 | 16 |
| 2016 | 0 | 30 |
| 2017 | 0 | 28 |
| 2018 | 14 | 13 |
| 2019 | 12 | 22 |
| 2020 | 0 | 20 |
| 2021 | 0 | 25 |
| 2022 | 0 | 19 |
| 2023 | 0 | 23 |
| 2024 | 13 | 20 |
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. Cash Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Cash's Medicare-recorded procedure volume has trended upward over 12 years, increasing 38% from 24 procedures in 2013 to 33 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. Cash
How does Dr. Cash's procedure volume compare to other California surgeons?
Dr. Cash has performed 33 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. Cash ranks #378 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Cash perform?
Dr. Cash's Medicare data shows procedures in knee replacement (20 cases) and hip replacement (13 cases).
Are there other orthopedic surgeons near Dr. Cash in Modesto?
Yes. There are 10 orthopedic surgeons in Modesto 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. Cash 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. Cash's total volume across all insurers at roughly 110 to 140 procedures against the 33 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. Cash's procedure volume changed over time?
Yes. Dr. Cash's Medicare-recorded volume has increased from 24 procedures in 2013 to 33 in the most recent data, a 38% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 34 procedures in 2019.
Does Dr. Cash perform more than one type of joint replacement?
Yes. Dr. Cash's Medicare data shows procedures in knee replacement (20 cases), hip replacement (13 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Cash affiliated with?
According to CMS facility affiliation data, Dr. Cash is affiliated with Samaritan Pacific Community Hospital, Good Samaritan Regional Medical Center, San Joaquin General Hospital, Samaritan North Lincoln Hospital. Dr. Cash maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
How does Dr. Cash compare to other orthopedic surgeons in Modesto?
Among the 10 orthopedic surgeons in Modesto, Dr. Cash ranks #6 by total Medicare procedure volume. The highest-volume surgeon in Modesto has 150 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Cash practices?
Samaritan Pacific Community Hospital (2 out of 5 CMS stars, insufficient case volume for complication rate comparison); Good Samaritan Regional Medical Center (3 out of 5 CMS stars, hip/knee complication rate similar to national average); San Joaquin General Hospital (2 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 Modesto, California
Dr. Cash's 33 Medicare procedures are below the Modesto average of 68. The table below compares verified procedure volumes for orthopedic surgeons practicing in Modesto.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Jonathon Staples | 150 | Hip, Knee |
| Dr. William Whang | 145 | Hip, Knee |
| Dr. Wesley Kinzie | 46 | Hip, Knee |
| Dr. Jesua Law | 39 | Knee |
| Dr. William Pistel | 35 | Knee, Shoulder |
| Dr. William Holmes | 26 | 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.