Joan C. Hermsen, APNP
NPI 1073572004ActiveIndividual· Nurse Practitioner· Madison, WI
Nurse Practitioner (APNP) with University of Wisconsin Medical Foundation Inc and 2 other groups, practicing in Madison, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $243,770 for 1,007 claims, against $14,440 paid for services in 2024. United Therapeutics Corporation reported $101.51 in payments in 2025, mostly food and beverage. Lists Marshfield Medical Center and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1073572004 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APNP |
| Sole proprietor | No |
| NPI issued | Mar 20, 2006 |
| Last updated in NPPES | Jul 29, 2025 |
| Certified by provider | Jul 29, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 1363 | WI |
| Nurse Practitioner | 363L00000X | 105239 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 117 |
|---|---|
| Services billed | 283 across 12 procedure codes |
| Paid by Medicare | $14,440 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,007 · 2,126 30-day fills |
|---|---|
| Patients | 182 |
| Total drug cost | $243,770 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- University of Wisconsin Medical Foundation IncMadison, WI · 2,553 clinicians
- McHs Hospitals IncMarshfield, WI · 1,197 clinicians
- Mercy Health System CorporationJanesville, WI · 753 clinicians
Hospital affiliations
- Marshfield Medical CenterMarshfield, WI
- Marshfield Medical Center - MinocquaMinocqua, WI
- Marshfield Medical Center - WestonWeston, WI
- University of Wi Hospitals & Clinics AuthorityMadison, WI
Industry payments (Open Payments)
- 2025$101.51 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| United Therapeutics Corporation | $101.51 | 1 |
What the 2025 payments were for
- Food and Beverage$101.51 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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