Dr. Delbert Maddox, D.O.
Contact & Location
602-588-4040
Glendale, AZ 85308
Dr. Maddox performs more knee replacement procedures than 73% of orthopedic surgeons in Arizona, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #41 of 152 ranked knee surgeons in Arizona.
About Dr. Maddox
Practice. Dr. Delbert Maddox is an orthopedic surgeon practicing in Glendale, Arizona. The latest annual CMS data records 62 knee replacements. That is #41 in Arizona for knee replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 34 procedures a year to 62, up 82%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 62 procedures is above the national average of 45.
Local context. Glendale has 3 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 | Knee Replacement |
|---|---|
| 2013 | 34 |
| 2014 | 35 |
| 2015 | 31 |
| 2016 | 40 |
| 2017 | 61 |
| 2018 | 44 |
| 2019 | 70 |
| 2020 | 65 |
| 2021 | 48 |
| 2022 | 58 |
| 2023 | 51 |
| 2024 | 62 |
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. 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. Maddox Compares
Procedure volume compared to the Arizona state average.
Volume Trend Analysis
Dr. Maddox's Medicare-recorded procedure volume has trended upward over 12 years, increasing 82% from 34 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.
Pain Management After Joint ReplacementA comprehensive guide to managing post-surgical pain through medication, physical therapy, cold therapy, and non-pharmacological strategies.
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. Maddox
How does Dr. Maddox's procedure volume compare to other Arizona surgeons?
Dr. Maddox has performed 62 Medicare-verified joint replacement procedures. This is in line with the Arizona average of 72 procedures per surgeon. Dr. Maddox ranks #87 out of 191 orthopedic surgeons in Arizona.
What types of joint replacement does Dr. Maddox perform?
Dr. Maddox's reported Medicare volume is focused on knee replacement, with 62 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Maddox in Glendale?
Yes. There are 3 orthopedic surgeons in Glendale 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 Arizona surgeons.
What does the Medicare data for Dr. Maddox 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, which puts Dr. Maddox's total volume across all insurers at roughly 220 to 270 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. Maddox's procedure volume changed over time?
Yes. Dr. Maddox's Medicare-recorded volume has increased from 34 procedures in 2013 to 62 in the most recent data, a 82% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 70 procedures in 2019.
Which hospitals is Dr. Maddox affiliated with?
According to CMS facility affiliation data, Dr. Maddox is affiliated with Honorhealth Deer Valley Medical Center, Honorhealth John C. Lincoln Medical Center.
How does Dr. Maddox compare to other orthopedic surgeons in Glendale?
Among the 3 orthopedic surgeons in Glendale, Dr. Maddox ranks #3 by total Medicare procedure volume. Dr. Maddox is among the highest-volume surgeons in Glendale.
What are the quality ratings for hospitals where Dr. Maddox practices?
Honorhealth Deer Valley Medical Center (2 out of 5 CMS stars, hip/knee complication rate similar to national average); Honorhealth John C. Lincoln Medical Center (3 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 Glendale, Arizona
Dr. Maddox's 62 Medicare procedures are below the Glendale average of 68. The table below compares verified procedure volumes for orthopedic surgeons practicing in Glendale.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Brent Hansen | 77 | Hip, Knee, Shoulder |
| Dr. David Burk | 66 | 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.