Delbert Maddox, DO
Orthopaedic Surgery · Glendale, AZNPI 1871564294
Payments from drug & device makers
What this record shows
14 manufacturers reported payments, led by Stryker at 58.5% of the total. Reporting peaked in 2024 at $1,093 and has fallen 73.0% since, to $295 in 2025. That places this record below the midpoint for orthopaedic surgery clinicians in AZ, where the typical reported total is $4,792.
Across 36 payments — averaging $93.08 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Stryker$2K
- Team_makena_llc$578
- Zimmer Biomet$303
- Anika Therapeutics, Inc.$155
- Pacira Therapeutics, Inc.$126
- Smith+Nephew$52
- plus $175 from 8 others
Across 2 payments — averaging $697.29 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Novartis$1K
What the payments were for
- Travel & lodging$1,56847%
- Food & beverage$1,78353%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Stryker | 13 | $1,962 |
| Team_makena_llc | 5 | $578 |
| Zimmer Biomet | 3 | $303 |
| Anika Therapeutics, Inc. | 1 | $155 |
| Pacira Therapeutics, Inc. | 4 | $126 |
| Smith+Nephew | 1 | $52 |
| Amgen | 2 | $33 |
| Dynasplint Systems Inc. | 1 | $32 |
| Vericel Corporation | 1 | $23 |
| Dilon Technologies, Inc. | 1 | $22 |
| Johnson & Johnson | 1 | $21 |
| Avanos Medical | 1 | $19 |
| Acelrx Pharmaceuticals, Inc. | 1 | $18 |
| Orthofix Medical, Inc. | 1 | $7 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
How this compares
$3,351 in reported general payments places this provider in the 40th percentile of 377 orthopaedic surgery providers in Arizona.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Meloxicam | 445 | $1,260 |
| Diclofenac Sodium | 58 | $494 |
| Methylprednisolone | 32 | $216 |
| Cephalexin | 61 | $201 |
| Ibuprofen | 14 | $199 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery in Glendale
- Mark AllenGlendale$107K
- Evan LedermanPhoenix$12M
- James ChowPhoenix$6.1M
- Michael McKeePhoenix$3.4M
- Henry ClarkePhoenix$1.9M
- Mark CampbellSun City West$788K
- Samuel HarmsenPhoenix$735K
- John LankenauLake Havasu City$669K
- Paul GauseScottsdale$614K
- Bertrand KaperScottsdale$482K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.