Mary Ann Pasternacki, RN, FNP-C
NPI 1275690331ActiveIndividual· Nurse Practitioner, Family· Flagstaff, AZ
Nurse Practitioner, Family (RN, FNP-C) in Flagstaff, Arizona, licensed in AZ, with an NPI issued in January 2007. Their prescriptions cost Medicare Part D more than their services did: $189,574 for 1,793 claims, against $42,034 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 11 companies reporting payments in 2025, $526.97 in all, mostly food and beverage. Lists Flagstaff Medical Center as a hospital affiliation.
Overview
| NPI | 1275690331 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | RN, FNP-C |
| Sole proprietor | Yes |
| NPI issued | Jan 1, 2007 |
| Last updated in NPPES | Oct 2, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | AZ0647 | AZ |
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 (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 126 |
|---|---|
| Services billed | 1,263 across 25 procedure codes |
| Paid by Medicare | $42,034 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,793 · 4,568 30-day fills |
|---|---|
| Patients | 157 |
| Total drug cost | $189,574 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Hospital affiliation
- Flagstaff Medical CenterFlagstaff, AZ
Other facilities
- Angels Care Home Health of Arizona No 5Home health agency · Flagstaff, AZ
Industry payments (Open Payments)
- 2025$526.97 · 25 payments from 11 companies
- 2024$975.48 · 46 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $184.26 | 11 |
| Merz Pharmaceuticals, LLC | $52.37 | 2 |
| Eisai Inc. | $51.20 | 2 |
| Emd Serono, Inc. | $49.35 | 2 |
| Abbvie Inc. | $40.72 | 2 |
What the 2025 payments were for
- Food and Beverage$526.97 · 25 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 91 family nurse practitioners in Flagstaff · All family nurse practitioners in Arizona