Tammy Johnsen, NP
NPI 1073713913ActiveIndividual· Nurse Practitioner· Waukesha, WI
Nurse Practitioner (NP) with Prohealth Medical Group Inc, practicing in Waukesha, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $85,072 for 499 claims, against $10,461 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 2 companies reporting payments in 2025, $379.59 in all, mostly food and beverage. Lists Oconomowoc Memorial Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1073713913 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Jul 19, 2007 |
| Last updated in NPPES | Aug 22, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 7504 | WI |
| Nurse Practitioner | 363L00000X | 209005063 | IL |
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 | 99 |
|---|---|
| Services billed | 144 across 6 procedure codes |
| Paid by Medicare | $10,461 |
Part D prescriptions in 2024
| Prescriptions (claims) | 499 · 1,224 30-day fills |
|---|---|
| Patients | 118 |
| Total drug cost | $85,072 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Prohealth Medical Group IncMukwonago, WI · 479 clinicians
Hospital affiliations
- Oconomowoc Memorial HospitalOconomowoc, WI
- Waukesha Memorial HospitalWaukesha, WI
Industry payments (Open Payments)
- 2025$379.59 · 5 payments from 2 companies
- 2024$1,140 · 8 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $221.27 | 2 |
| Amgen Inc. | $158.32 | 3 |
What the 2025 payments were for
- Food and Beverage$379.59 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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