Andrew Knudsen, DPM
Foot & Ankle Surgery · Bismarck, NDNPI 1407111321
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $1,555 of the $2,190 with a category attached, or 71.0%. Trilliant Surgical LLC. accounts for 63.9% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2019 at $2,123 and has fallen 97.5% since, to $54 in 2025. That places this record below the midpoint for foot & ankle surgery clinicians in ND, where the typical reported total is $5,483.
Across 19 payments — averaging $115.24 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Trilliant Surgical LLC.$1K
- Stryker$709
- Johnson & Johnson$81
What the payments were for
- Travel & lodging$1,55571%
- Food & beverage$63529%
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 |
|---|---|---|
| Trilliant Surgical LLC. | 11 | $1,399 |
| Stryker | 5 | $709 |
| Johnson & Johnson | 3 | $81 |
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.
- Gridlock Ankle$1,023
- INFINITY$658
How this compares
$2,190 in reported general payments places this provider in the 35th percentile of 23 foot & ankle surgery providers in North Dakota.
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 |
|---|---|---|
| Gabapentin | 114 | $2,565 |
| Imiquimod | 13 | $356 |
| Pregabalin | 16 | $356 |
| Allopurinol | 32 | $307 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 26 | $204 |
| Methylprednisolone | 16 | $147 |
| Terbinafine Hcl | 14 | $110 |
| Colchicine | 12 | $64 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 29 | $62 |
Paid to pharmacies, not to this prescriber.
Other foot & ankle surgery in Bismarck
- Kevin KoesterBismarck$10K
- Eric HartBismarck$5K
- Brian GaleBismarck$900
- Gregory IwaasaBismarck$82
- Thomas NordquistMinot$23K
- Timothy UglemFargo$18K
- Robert RenschlerFargo$17K
- Rachael RenschlerJamestown$17K
- Yashraj ChauhanGrand Forks$16K
- John NaughtonFargo$15K
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.