Chad Seidenstricker
Foot & Ankle Surgery · Phoenix, AZNPI 1285051714
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (56.1%), travel and lodging and education — rather than concentrated in one kind of arrangement. Stryker accounts for 65.8% of it on its own, with 9 other manufacturers making up the rest. Reporting peaked in 2019 at $4,340 and has fallen 74.4% since, to $1,113 in 2025.
Across 119 payments — averaging $93.86 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Stryker$7K
- Gemini Mountain Medical, LLC$2K
- Paragon 28, Inc.$1K
- Flower Orthopedics Coporation$249
- DJO, LLC$223
- Treace Medical Concepts, Inc.$76
- plus $158 from 4 others
What the payments were for
- Travel & lodging$2,86826%
- Food & beverage$6,26856%
- Education$1,67815%
- Gifts$3563%
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(2 entities) | 81 | $7,351 |
| Gemini Mountain Medical, LLC | 2 | $1,822 |
| Paragon 28, Inc. | 8 | $1,291 |
| Flower Orthopedics Coporation | 2 | $249 |
| DJO, LLC | 15 | $223 |
| Treace Medical Concepts, Inc. | 2 | $76 |
| Zimmer Biomet | 2 | $69 |
| Embody, Inc. | 1 | $41 |
| Alliance Medical | 1 | $26 |
| Orthofix Medical, Inc. | 5 | $22 |
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.
- INBONE$1,042
- INFINITY$1,036
- PROPHECY$1,024
- INVISION$871
- ANCHORAGE$568
- MAKO$498
- INFINITY ADAPTIS$422
- Additive Orthopedics$389
- PROstep$379
- APEX 3D$374
- Portfolio$299
- 7 X 23MM CITRELOCK IMPLANT$172
- AXS INFINITY LS$171
- VARIAX$168
- BIO4$161
- NANOPASS$151
- ALLOGRAFT$150
- FIXOS$147
- HOFFMANN$144
- Actishield$142
How this compares
$11,170 in reported general payments places this provider in the 80th percentile of 291 foot & ankle 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 |
|---|---|---|
| Celecoxib | 27 | $743 |
| Gabapentin | 43 | $520 |
| Oxycodone Hcl | 28 | $193 |
| Cephalexin | 15 | $170 |
| Meloxicam | 24 | $160 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 17 | $100 |
Paid to pharmacies, not to this prescriber.
Other foot & ankle surgery in Phoenix
- Ryan ScottPhoenix$1.1M
- Jeffrey HolmesPhoenix$509K
- Melissa GalliPhoenix$324K
- Zachary FlynnPhoenix$239K
- Kyle VaughnPhoenix$110K
- David JaffePhoenix$75K
- Jason KaycePhoenix$57K
- Devin BlandPhoenix$49K
- Braden BoyerPhoenix$32K
- Martin WeismanPhoenix$31K
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.