Carl Wierks, MD
Sports Medicine · Grand Rapids, MINPI 1215075106
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $38,388 of the $58,600 with a category attached, or 65.5%. Arthrex accounts for 98.8% of it on its own, with 5 other manufacturers making up the rest. Reporting peaked in 2021 at $28,071 and has fallen 96.7% since, to $928 in 2025. Among sports medicine clinicians in MI with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 133 payments — averaging $440.60 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Arthrex$58K
- Stryker$365
- Davol Inc.$94
- Heron Therapeutics, Inc.$82
- Smith+Nephew$77
- Lightbody Medical Technologies Inc$76
What the payments were for
- Royalty or licence$11,37119%
- Speaking & faculty fees$38,38866%
- Travel & lodging$6,56611%
- Food & beverage$2,2754%
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 |
|---|---|---|
| Arthrex | 125 | $57,905 |
| Stryker | 3 | $365 |
| Davol Inc. | 1 | $94 |
| Heron Therapeutics, Inc. | 2 | $82 |
| Smith+Nephew | 1 | $77 |
| Lightbody Medical Technologies Inc | 1 | $76 |
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.
- ARTHREX$6,673
- KNEE & HIP IMPLANTS HIP PUSHLOCKS$3,659
- KNEE & HIP IMPLANTS HIP IMPLANT KITS$953
- MAKO$292
- KNEE & HIP INSTRUMENTS HIP INSTRUMENTS$114
How this compares
$58,600 in reported general payments places this provider in the 95th percentile of 145 sports medicine providers in Michigan.
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 | 45 | $844 |
| Methylprednisolone | 11 | $58 |
| Amoxicillin | 37 | $43 |
| Meloxicam | 12 | $25 |
Paid to pharmacies, not to this prescriber.
Other sports medicine in Grand Rapids
- Kendall HamiltonGrand Rapids$61K
- James LeboltGrand Rapids$14K
- Thomas MatelicGrand Rapids$10K
- Erik HedlundGrand Rapids$3K
- Peter TheutGrand Rapids$3K
- Tariq AwanFarmington Hills$113K
- Michael YusafAuburn Hills$101K
- Jack PinneyMidland$67K
- William KestoNovi$62K
- Manuel SchubertYpsilanti$42K
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.