Ronald Hamrick, MD
Dermatology · Milwaukee, WINPI 1447542162
Payments from drug & device makers
Across 85 payments — averaging $22.60 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$261
- Sun Pharmaceutical Industries Inc.$207
- Johnson & Johnson$143
- Genentech USA, Inc.$142
- Chiesi USA, Inc.$139
- Kyowa Kirin, Inc.$120
- plus $909 from 19 others
What the payments were for
- Food & beverage$1,62585%
- Education$29615%
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 |
|---|---|---|
| AbbVie | 10 | $261 |
| Sun Pharmaceutical Industries Inc. | 7 | $207 |
| Johnson & Johnson(2 entities) | 5 | $143 |
| Genentech USA, Inc. | 7 | $142 |
| Chiesi USA, Inc. | 5 | $139 |
| Kyowa Kirin, Inc. | 5 | $120 |
| Novartis | 4 | $107 |
| Regeneron Healthcare Solutions, Inc. | 5 | $104 |
| ZOLL Services LLC (a/k/a ZOLL Lifecor Corp) | 7 | $102 |
| Amgen | 5 | $94 |
| Pfizer | 4 | $78 |
| Mayne Pharma Commercial LLC | 3 | $62 |
| Boehringer Ingelheim | 3 | $61 |
| Mallinckrodt Hospital Products Inc. | 2 | $54 |
| UCB, Inc. | 2 | $33 |
| Surgical Specialties Corporation (US), Inc. (dba Corza Medical) | 1 | $30 |
| Ortho Dermatologics, A Division Of Bausch Health US, LLC | 2 | $29 |
| DUSA Pharmaceuticals, Inc. | 1 | $24 |
| Heartflow, Inc. | 1 | $23 |
| Incyte Corporation | 1 | $23 |
| Novo Nordisk | 1 | $19 |
| Lilly USA, LLC | 1 | $18 |
| Bristol Myers Squibb | 1 | $18 |
| Merck | 1 | $16 |
| Paratek Pharmaceuticals, Inc. | 1 | $14 |
How this compares
$1,921 in reported general payments places this provider in the 75th percentile of 260 dermatology providers in Wisconsin.
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 |
|---|---|---|
| Clobetasol Propionate | 27 | $1,116 |
| Fluorouracil | 12 | $966 |
| Mycophenolate Mofetil | 13 | $657 |
| Triamcinolone Acetonide | 38 | $576 |
| Hydroxychloroquine Sulfate | 12 | $381 |
| Ketoconazole | 17 | $208 |
| Prednisone | 17 | $86 |
| Hydrocortisone | 17 | $74 |
Paid to pharmacies, not to this prescriber.
Other dermatology in Milwaukee
- Ashley DietrichMilwaukee$466K
- Sam HwangMilwaukee$32K
- Erik AlexanderMilwaukee$25K
- Heather Wells-HolteyMilwaukee$3K
- Lisa ArkinMadison$1.4M
- David NelsenJanesville$1.1M
- Kenneth GordonWauwatosa$887K
- Gabriela MaloneyOconomowoc$725K
- Martin OkunFort Atkinson$247K
- Betsy WernliManitowoc$177K
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.