Katrina M. Merkel, FNP
NPI 1033688056ActiveIndividual· Nurse Practitioner· Eau Claire, WI
Nurse Practitioner (FNP) with Mayo Clinic Health System-Northwest Wisconsin Region Inc and 1 other group, practicing in Eau Claire, Wisconsin. 83 Medicare patients in 2024, $6,082 paid; nearly all of their 149 Part D prescriptions were generic (98%). Solventum Corporation reported $81.97 in payments in 2025, mostly food and beverage. Lists Chippewa Valley Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1033688056 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP |
| Sole proprietor | No |
| NPI issued | Nov 20, 2018 |
| Last updated in NPPES | Aug 24, 2022 |
| Certified by provider | Aug 24, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 8897-33 | WI |
| Registered Nurse | 163W00000X | 20158630 | WI |
| Nurse Practitioner, Family | 363LF0000X | 8897-33 | 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 | 83 |
|---|---|
| Services billed | 97 across 16 procedure codes |
| Paid by Medicare | $6,082 |
Part D prescriptions in 2024
| Prescriptions (claims) | 149 · 163 30-day fills |
|---|---|
| Patients | 55 |
| Total drug cost | $3,527 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Mayo Clinic Health System-Northwest Wisconsin Region IncEau Claire, WI · 802 clinicians
- Chippewa Valley Hospital and Oakview Care Center IncDurand, WI · 12 clinicians
Hospital affiliations
- Chippewa Valley HospitalDurand, WI
- Mayo Clinic Health System Eau Claire HospitalEau Claire, WI
Industry payments (Open Payments)
- 2025$81.97 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Solventum Corporation | $81.97 | 1 |
What the 2025 payments were for
- Food and Beverage$81.97 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 185 nurse practitioners in Eau Claire · All nurse practitioners in Wisconsin