Dr. Daniel Davis, MD
Contact & Location
805-527-1404
Simi Valley, CA 93065
Thousand Oaks, CA 91360
Dr. Davis performs more knee replacement procedures than 57% of orthopedic surgeons in California, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #211 of 491 ranked knee surgeons in California.
About Dr. Davis
Dr. Daniel Davis is a board-certified orthopedic surgeon practicing in Simi Valley, California. A Medicare provider since 2006, Dr. Davis completed 36 knee replacements (#211 in California), 19 shoulder replacements, and 11 hip replacements in the latest annual CMS data, totaling 66 Medicare-verified procedures.
In California, Dr. Davis performs below the state average in knee (36 vs 47), below the state average in shoulder (19 vs 31), below the state average in hip (11 vs 41).
Dr. Davis performs all three major joint replacement procedures (hip, knee, and shoulder), indicating a broad scope of orthopedic practice. The largest share is knee replacements (36 cases), followed by shoulder replacements (19) and hip replacements (11).
Dr. Davis is the only orthopedic surgeon in Simi Valley represented in the current Medicare dataset, serving as the primary local option for patients considering joint replacement surgery in the area.
Medicare records for Dr. Davis extend back to 2013, covering 12 years of data. Over that period, recorded procedure volume increased from 38 to 66 in the most recent data, a 74% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,612 knee replacement surgeons tracked nationally, Dr. Davis's 36 verified procedures is near the national average of 45.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement | Shoulder Replacement |
|---|---|---|---|
| 2013 | 11 | 27 | 0 |
| 2014 | 12 | 19 | 0 |
| 2015 | 11 | 29 | 0 |
| 2016 | 14 | 28 | 0 |
| 2017 | 22 | 32 | 0 |
| 2018 | 16 | 24 | 15 |
| 2019 | 12 | 28 | 0 |
| 2020 | 23 | 27 | 11 |
| 2021 | 14 | 29 | 0 |
| 2022 | 22 | 25 | 0 |
| 2023 | 16 | 25 | 0 |
| 2024 | 11 | 36 | 19 |
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, 29% to 37% for shoulder 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. Davis Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Davis's Medicare-recorded procedure volume has trended upward over 12 years, increasing 74% from 38 procedures in 2013 to 66 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.
Prehabilitation: Preparing Your Body for SurgeryEvidence-based exercises and lifestyle adjustments that can improve surgical outcomes and speed recovery when started weeks before your procedure.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
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.
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. Davis
How does Dr. Davis's procedure volume compare to other California surgeons?
Dr. Davis has performed 66 Medicare-verified joint replacement procedures. This is in line with the California average of 68 procedures per surgeon. Dr. Davis ranks #210 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Davis perform?
Dr. Davis performs all three major joint replacement procedures: knee replacement (36 cases), shoulder replacement (19 cases), hip replacement (11 cases). This breadth indicates a comprehensive orthopedic joint replacement practice.
Where is Dr. Davis's practice located?
Dr. Davis practices in Simi Valley, California. The office is located at 2525 Erringer Rd, Simi Valley, CA 93065. Patients in the surrounding area can consult Dr. Davis for joint replacement evaluation.
What does the Medicare data for Dr. Davis 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, 29% to 37% for shoulder replacement, 25% to 33% for hip replacement, which puts Dr. Davis's total volume across all insurers at roughly 210 to 270 procedures against the 66 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. Davis's procedure volume changed over time?
Yes. Dr. Davis's Medicare-recorded volume has increased from 38 procedures in 2013 to 66 in the most recent data, a 74% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 66 procedures in 2024.
Does Dr. Davis perform more than one type of joint replacement?
Yes. Dr. Davis's Medicare data shows procedures in knee replacement (36 cases), shoulder replacement (19 cases), hip replacement (11 cases). Performing all three major joint replacements places Dr. Davis among the 5% of orthopedic surgeons nationally who cover hip, knee, and shoulder arthroplasty.
Which hospitals is Dr. Davis affiliated with?
According to CMS facility affiliation data, Dr. Davis is affiliated with Adventist Health Simi Valley, Los Robles Hospital & Medical Center.
What are the quality ratings for hospitals where Dr. Davis practices?
Adventist Health Simi Valley (2 out of 5 CMS stars, hip/knee complication rate similar to national average); Los Robles Hospital & Medical Center (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.
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.