Ann M. Chizek-Liermann, NP
NPI 1780696542ActiveIndividual· Nurse Practitioner· Rhinelander, WI
Nurse Practitioner (NP) with Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc. and 1 other group, practicing in Rhinelander, Wisconsin. 216 Medicare patients in 2024, $30,218 paid; nearly all of their 124 Part D prescriptions were generic (99%). Merz Pharmaceuticals, LLC reported $18.44 in payments in 2025, mostly food and beverage. Lists Aspirus Rhinelander Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1780696542 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Aug 12, 2006 |
| Last updated in NPPES | Mar 1, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 1753 | 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 | 216 |
|---|---|
| Services billed | 4,093 across 39 procedure codes |
| Paid by Medicare | $30,218 |
Part D prescriptions in 2024
| Prescriptions (claims) | 124 · 124 30-day fills |
|---|---|
| Patients | 81 |
| Total drug cost | $1,464 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc.Rhinelander, WI · 574 clinicians
- Aspirus Medical Group, Inc.Wausau, WI · 268 clinicians
Hospital affiliations
- Aspirus Rhinelander HospitalRhinelander, WI
- Aspirus Tomahawk HospitalTomahawk, WI
Industry payments (Open Payments)
- 2025$18.44 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merz Pharmaceuticals, LLC | $18.44 | 1 |
What the 2025 payments were for
- Food and Beverage$18.44 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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