Tahnee Siewert
NPI 1013265966ActiveIndividual· Nurse Practitioner, Gerontology· Manitowoc, WI
Nurse Practitioner, Gerontology with Aspirus Medical Group, Inc., practicing in Manitowoc, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $697,197 for 3,210 claims, against $32,159 paid for services in 2024. Abiomed was the largest of 6 companies reporting payments in 2025, $616.13 in all, mostly food and beverage. Lists Aspirus Keweenaw Hospital and Clinics and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1013265966 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Aug 27, 2012 |
| Last updated in NPPES | Aug 12, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Gerontology Primary | 363LG0600X | 5173-33 | WI |
| Registered Nurse | 163W00000X | 175038-30 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 372 |
|---|---|
| Services billed | 468 across 19 procedure codes |
| Paid by Medicare | $32,159 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,210 · 7,550 30-day fills |
|---|---|
| Patients | 585 |
| Total drug cost | $697,197 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Aspirus Medical Group, Inc.Wausau, WI · 268 clinicians
Hospital affiliations
- Aspirus Keweenaw Hospital and ClinicsLaurium, MI
- Aspirus Medford Hospital & Clinics, IncMedford, WI
- Aspirus Riverview Hospital & Clinics IncWisconsin Rapids, WI
- Aspirus Stevens Point Hospital & Clinics, Inc.Stevens Point, WI
- Aspirus Wausau HospitalWausau, WI
Industry payments (Open Payments)
- 2025$616.13 · 10 payments from 6 companies
- 2024$417.08 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abiomed | $179.78 | 3 |
| Edwards Lifesciences Corporation | $154.36 | 3 |
| E.R. Squibb & Sons, L.L.C. | $134.96 | 1 |
| Abbott Laboratories | $116.54 | 1 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $19.58 | 1 |
What the 2025 payments were for
- Food and Beverage$616.13 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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