Brittany Kornfehl
Nurse Practitioner · Fond du Lac, WINPI 1619471117
Payments from drug & device makers
Across 108 payments — averaging $17.99 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alkermes, Inc.$342
- AbbVie$312
- Lundbeck LLC$298
- Otsuka America Pharmaceutical, Inc.$169
- Teva Pharmaceuticals USA, Inc.$156
- ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.)$143
- plus $524 from 8 others
What the payments were for
- Food & beverage$1,943100%
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 |
|---|---|---|
| Alkermes, Inc. | 19 | $342 |
| AbbVie | 21 | $312 |
| Lundbeck LLC | 16 | $298 |
| Otsuka America Pharmaceutical, Inc. | 9 | $169 |
| Teva Pharmaceuticals USA, Inc. | 8 | $156 |
| ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.) | 6 | $143 |
| Indivior Inc. | 5 | $116 |
| Johnson & Johnson | 6 | $104 |
| Takeda Pharmaceuticals U.S.A., Inc. | 5 | $89 |
| Vanda Pharmaceuticals Inc. | 5 | $72 |
| E.r. Squibb & Sons, L.L.C. | 3 | $67 |
| Neurocrine Biosciences, Inc. | 3 | $46 |
| Eisai Inc. | 1 | $15 |
| USWM, LLC | 1 | $15 |
How this compares
$1,943 in reported general payments places this provider in the 90th percentile of 3,478 nurse practitioner 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 |
|---|---|---|
| Divalproex Sodium ErDivalproex Sodium | 14 | $1,500 |
| Lurasidone Hcl | 12 | $988 |
| Oxcarbazepine | 14 | $728 |
| Haloperidol | 18 | $682 |
| Clozapine | 20 | $618 |
| Lorazepam | 13 | $123 |
| Trihexyphenidyl Hcl | 13 | $111 |
| Trazodone Hcl | 25 | $108 |
| Sertraline Hcl | 14 | $47 |
Paid to pharmacies, not to this prescriber.
Other nurse practitioner in Fond du Lac
- David WeegarFond du Lac$6K
- Cynthia CarlsonMadison$891K
- Jodi StrongStevens Point$246K
- Jo Ellen FrawleyPrairie du Sac$194K
- Trisha WilcoxMilwaukee$174K
- Sally BowaGreen Bay$117K
- Christina SauldMilwaukee$111K
- Melissa WendellWausau$98K
- Colleen TrevinoMilwaukee$94K
- Nicole BarteltWaukesha$85K
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.