Tamera Ostenaa, APRN, CNP
NPI 1013483692ActiveIndividual· Nurse Practitioner, Family· Mahnomen, MN
Nurse Practitioner, Family (APRN, CNP) with Sanford Medical Center Fargo and 2 other groups, practicing in Mahnomen, Minnesota. Their prescriptions cost Medicare Part D more than their services did: $378,219 for 5,193 claims, against $169.06 paid for services in 2024. Phathom Pharmaceuticals, Inc. was the largest of 5 companies reporting payments in 2025, $87.11 in all, mostly food and beverage. Lists Essentia Health Ada and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1013483692 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APRN, CNP |
| Sole proprietor | No |
| NPI issued | Oct 22, 2018 |
| Last updated in NPPES | Mar 18, 2025 |
| Certified by provider | Mar 18, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 6248 | MN |
| Family Medicine | 207Q00000X | 6248 | MN |
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 (MN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 33 |
|---|---|
| Services billed | 52 across 7 procedure codes |
| Paid by Medicare | $169.06 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,193 · 9,185 30-day fills |
|---|---|
| Patients | 304 |
| Total drug cost | $378,219 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Sanford Medical Center FargoWest Fargo, ND · 1,225 clinicians
- St Marys Regional Health CenterMenahga, MN · 190 clinicians
- Sanford Clinic NorthMahnomen, MN · 9 clinicians
Hospital affiliations
- Essentia Health AdaAda, MN
- Essentia Health St Marys - Detroit LakesDetroit Lakes, MN
- Mahnomen Health CenterMahnomen, MN
- Sanford Medical Center FargoFargo, ND
Other facilities
- Essentia Health Home Care WestHome health agency · Detroit Lakes, MN
- Hia HospiceHospice · Fargo, ND
Industry payments (Open Payments)
- 2025$87.11 · 6 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Phathom Pharmaceuticals, Inc. | $27.65 | 2 |
| Lundbeck LLC | $16.44 | 1 |
| Lilly USA, LLC | $14.87 | 1 |
| Otsuka America Pharmaceutical, Inc. | $14.57 | 1 |
| Novo Nordisk Inc | $13.58 | 1 |
What the 2025 payments were for
- Food and Beverage$87.11 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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