Holly Vanderwerff
Physician Assistant · Troy, MINPI 1194195966
Payments from drug & device makers
Across 179 payments — averaging $27.46 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Johnson & Johnson$835
- Amgen$537
- AbbVie$424
- Sanofi$382
- Sun Pharmaceutical Industries Inc.$381
- Incyte Corporation$272
- plus $2K from 22 others
What the payments were for
- Food & beverage$4,65695%
- Education$2605%
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 |
|---|---|---|
| Johnson & Johnson(2 entities) | 32 | $835 |
| Amgen | 18 | $537 |
| AbbVie | 18 | $424 |
| Sanofi | 11 | $382 |
| Sun Pharmaceutical Industries Inc. | 11 | $381 |
| Incyte Corporation | 12 | $272 |
| Regeneron Healthcare Solutions, Inc. | 7 | $267 |
| Lilly USA, LLC | 8 | $251 |
| Novartis | 10 | $203 |
| UCB, Inc. | 5 | $198 |
| Organon | 6 | $137 |
| Arcutis Biotherapeutics, Inc. | 8 | $135 |
| Inspire Medical Systems, Inc. | 1 | $133 |
| E.r. Squibb & Sons, L.L.C. | 5 | $114 |
| Dermavant Sciences, Inc. | 5 | $102 |
| Novo Nordisk | 1 | $98 |
| Ortho Dermatologics, A Division Of Bausch Health US, LLC | 3 | $69 |
| Boehringer Ingelheim | 2 | $67 |
| Pfizer | 4 | $67 |
| Biofrontera Inc. | 2 | $50 |
| LEO Pharma Inc. | 2 | $37 |
| Kyowa Kirin, Inc. | 2 | $36 |
| Alnylam Pharmaceuticals Inc. | 1 | $28 |
| AstraZeneca | 1 | $21 |
| Botanix SB Inc | 1 | $20 |
| Krystal Biotech Inc | 1 | $19 |
| Almirall LLC | 1 | $17 |
| Strata Skin Sciences, Inc. | 1 | $14 |
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
$4,916 in reported general payments places this provider in the 90th percentile of 5,453 physician assistant 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 |
|---|---|---|
| Dupixent PenDupilumab | 19 | $71,783 |
| Fluorouracil | 84 | $5,261 |
| Clobetasol Propionate | 143 | $4,633 |
| Tacrolimus | 34 | $3,794 |
| Ciclopirox | 60 | $2,562 |
| Fluticasone Propionate | 99 | $2,535 |
| Ammonium Lactate | 106 | $2,038 |
| Metronidazole | 35 | $1,671 |
| Econazole Nitrate | 31 | $1,142 |
| Clindamycin Phosphate | 30 | $1,142 |
| Betamethasone Diprop AugmentedBetamethasone/Propylene Glyc | 24 | $997 |
| Triamcinolone Acetonide | 110 | $894 |
| Fluocinolone AcetonideFluocinolone/Shower Cap | 13 | $831 |
| Ketoconazole | 38 | $663 |
| CiclopiroxCiclopirox Olamine | 44 | $656 |
Paid to pharmacies, not to this prescriber.
Other physician assistant in Troy
- Donald BerryTroy$18K
- Michael LutherTroy$14K
- Sarang PatelRoyal Oak$660K
- Beth SweneyAda$617K
- Zainab JishiCanton$596K
- Taylor HennrickAdrian$430K
- Erin van DykeGrand Rapids$346K
- Ashley AldridgeAnn Arbor$298K
- Derek SusallaRochester Hills$242K
- Gabrielle DamoreRoyal Oak$200K
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.