Heidi Nicole Oien, FNP-C
NPI 1669362604ActiveIndividual· Nurse Practitioner· Williston, ND
Nurse Practitioner (FNP-C) with Mercy Medical Center, practicing in Williston, North Dakota. Enrolled in Medicare as practitioner - nurse practitioner. Lists Chi St Alexius Health Williston as a hospital affiliation.
Overview
| NPI | 1669362604 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP-C |
| Sole proprietor | Yes |
| NPI issued | Jul 9, 2025 |
| Last updated in NPPES | Jul 9, 2025 |
| Certified by provider | Jul 9, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 202827 | ND |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (ND) |
|---|
Education and affiliations
| Graduation year | 2025 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Mercy Medical CenterWilliston, ND · 77 clinicians
Hospital affiliation
- Chi St Alexius Health WillistonWilliston, ND
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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