Heidi Oien, FNP-C
NPI 1669362604 · Nurse Practitioner · Williston, ND
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Heidi Oien, FNP-C is a Nurse Practitioner provider in Williston, ND (NPI 1669362604).
Provider details
- NPI number
- 1669362604
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 202827 (ND)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-07-09
- Last updated
- 2025-07-09
- Certified
- 2025-07-09
Frequently asked questions
- What is Heidi Oien's NPI number?
- Heidi Oien's National Provider Identifier (NPI) is 1669362604, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Heidi Oien's specialty?
- Heidi Oien is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Heidi Oien located?
- Heidi Oien's practice location on file with NPPES is 1301 15th Ave W, Williston, ND 58801-3821.
- What is Heidi Oien's phone number?
- The practice phone number listed in the NPPES registry for Heidi Oien is (701) 774-7400.
- Does Heidi Oien accept Medicare?
- Heidi Oien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Heidi Oien's NPI active?
- Yes — Heidi Oien's NPI (1669362604) is active in the NPPES registry as of the last update on 2025-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.