Tam Nguyen, DO
Dermatology · Menasha, WINPI 1619437365
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 94.9% of the total across 82 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 16 manufacturers reported payments, led by AbbVie at 39.2% of the total. Reporting peaked in 2023 at $1,350 and has fallen 88.4% since, to $156 in 2025.
Across 82 payments — averaging $40.62 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$1K
- E.r. Squibb & Sons, L.L.C.$456
- Sun Pharmaceutical Industries Inc.$319
- Pfizer$229
- Regeneron Healthcare Solutions, Inc.$169
- Sanofi$144
- plus $709 from 10 others
What the payments were for
- Speaking & faculty fees$973%
- Food & beverage$3,16195%
- Education$722%
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 | 40 | $1,304 |
| E.r. Squibb & Sons, L.L.C. | 10 | $456 |
| Sun Pharmaceutical Industries Inc. | 3 | $319 |
| Pfizer | 3 | $229 |
| Regeneron Healthcare Solutions, Inc. | 3 | $169 |
| Sanofi | 5 | $144 |
| Amgen | 3 | $131 |
| Boehringer Ingelheim | 4 | $120 |
| Dermavant Sciences, Inc. | 1 | $114 |
| EPI Health, LLC | 1 | $97 |
| Galderma Laboratories, L.p. | 3 | $80 |
| Sanofi-aventis U.S. LLC | 1 | $72 |
| Ortho Dermatologics, A Division Of Bausch Health US, LLC | 2 | $41 |
| Incyte Corporation | 1 | $20 |
| Arcutis Biotherapeutics, Inc. | 1 | $20 |
| UCB, 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
$3,330 in reported general payments places this provider in the 80th 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 | 34 | $920 |
| Tacrolimus | 12 | $902 |
| Fluorouracil | 11 | $784 |
| Ketoconazole | 26 | $609 |
| Doxycycline Monohydrate | 74 | $541 |
| Triamcinolone Acetonide | 48 | $540 |
| Hydrocortisone | 32 | $144 |
| Hydroxyzine Hcl | 11 | $136 |
| Mupirocin | 23 | $118 |
| Doxycycline Hyclate | 12 | $93 |
Paid to pharmacies, not to this prescriber.
Other dermatology in Menasha
- David NelsenJanesville$1.1M
- Gabriela MaloneyOconomowoc$725K
- Kenneth GordonWauwatosa$577K
- Ashley DietrichMilwaukee$466K
- Martin OkunFort Atkinson$232K
- Betsy WernliManitowoc$177K
- Daniel OpelSheboygan$118K
- Stephen LewellisPlover$73K
- Patrick SafoStevens Point$53K
- Giacomo MaggiolinoKenosha$49K
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.