Christy Christophersen, MD
Foot and Ankle Surgery · Ames, IANPI 1447631379
Payments from drug & device makers
What this record shows
The money is spread across several categories — education (39.4%), travel and lodging and food and beverage — rather than concentrated in one kind of arrangement. 6 manufacturers reported payments, led by Wardlow Enterprises at 39.4% of the total. Reporting peaked in 2022 at $1,297 and has fallen 98.6% since, to $18 in 2025. That places this record below the midpoint for foot and ankle surgery clinicians in IA, where the typical reported total is $2,625.
Across 27 payments — averaging $112.73 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Wardlow Enterprises$1K
- Stryker$1K
- Arthrex$602
- Zimmer Biomet$55
- Novastep Inc.$32
- Orthofix Medical, Inc.$3
What the payments were for
- Travel & lodging$93131%
- Food & beverage$91230%
- Education$1,20039%
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 |
|---|---|---|
| Wardlow Enterprises | 1 | $1,200 |
| Stryker(2 entities) | 22 | $1,151 |
| Arthrex | 1 | $602 |
| Zimmer Biomet | 1 | $55 |
| Novastep Inc. | 1 | $32 |
| Orthofix Medical, Inc. | 1 | $3 |
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.
- SALVATION$201
- ORTHOLOC 3DI$132
- INFINITY$122
How this compares
$3,044 in reported general payments places this provider in the 50th percentile of 112 foot and ankle surgery providers in Iowa.
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.
Other foot and ankle surgery in Ames
- David CainAmes$17K
- Leslie PyleAmes$9K
- Michael LeeDes Moines$2.1M
- Phinit PhisitkulSioux City$1.4M
- Sean GrambartDes Moines$590K
- Kelsey MillonigDes Moines$330K
- Charles CibulaCedar Falls$38K
- Gregory FooteWaterloo$35K
- Nathan ShumwayCouncil Bluffs$33K
- Justin RaatzDes Moines$28K
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.