NPPES file of Aug 9, 2026

Heidi Nicole Oien, FNP-C

Nurse Practitioner · Williston, ND

Heidi Nicole Oien, FNP-C is a nurse practitioner with a practice address in Williston, North Dakota, and NPI 1669362604, issued on Jul 9, 2025. Check the license (North Dakota 202827, as entered in NPPES) with the North Dakota board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1669362604
Name
Heidi Nicole Oien
Credential
FNP-C
Primary taxonomy
Nurse Practitioner 363L00000X
License number
202827 ND
Self-reported in NPPES; status is on the state search
Practice location
1301 15TH Ave W, Williston, ND 58801
Phone
(701) 774-7400
Enumerated
Jul 9, 2025
Record last updated
Jul 9, 2025
Medicare enrollment
Enrolled (PECOS I20251002003492); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest nurse practitioner records → All 463 in North Dakota → Look up another NPI →

Also registered at 1301 15TH Ave W

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. John Andelin, M.D.Anatomic Pathology & Clinical Pathology Physician1982793386
  2. Kaleb Barstad, RPHPharmacist1952959868
  3. Tammy Bearce, L.R.D.Registered Dietitian1356430763
  4. Teresa BellisPhysical Therapist1053541284
  5. Nana Oforiwaa Boateng, FNP-CFamily Nurse Practitioner1093219685
  6. Stacie Bondy, NP-CFamily Nurse Practitioner1982089272

Verify Heidi Nicole Oien in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich North Dakota board licenses this profession
    Search for license 202827    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the North Dakota license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Mercy Medical CenterWilliston, ND

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Heidi Nicole Oien among 463 nurse practitioner records in North Dakota

Heidi Nicole Oien, FNP-C is one of 463 nurse practitioner records with a practice address in North Dakota. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 93% of them.

  • NPI issued2025 · 93% of these records are older, 3% newer
  • In a Medicare fileYes · 76% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2025 · median 2018 among the 296 with a school on file
  • Record last updated2025 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a North Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

7 nurse practitioner records list a practice address in Williston

They are 7 of the 611 NPPES records with a practice address in Williston, and 463 nurse practitioner records in North Dakota.

All 463 in North Dakota → Every provider in Williston → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Joanne Bakken, FNPWilliston, ND 588011790865673
  2. Tanya Giese, FNP-CWilliston, ND 588011548997240
  3. April Haugrose, NPWilliston, ND 588011376099424
  4. Erin Langseth, DNPWilliston, ND 588011518659705
  5. Elizabeth Skov, FPMHNPWilliston, ND 588011013000108
  6. Joseph Stonehocker, BSN, CPNP-PCWilliston, ND 588011437660198
  7. Cimberly Berg-Hooker, FNP-BCWesthope, ND 587931497224224
  8. Kendra Larsen, FNP-CVelva, ND 587901013354018

Common questions

What is Heidi Nicole Oien, FNP-C's NPI number?

Heidi Nicole Oien, FNP-C's National Provider Identifier (NPI) is 1669362604, issued on Jul 9, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Heidi Nicole Oien, FNP-C located?

The NPPES record lists a practice address at 1301 15TH Ave W, Williston, ND, 58801. Phone: (701) 774-7400. Providers update this record themselves, so call before visiting.

How can I verify Heidi Nicole Oien, FNP-C's license?

NPPES lists North Dakota license number 202827, as entered by the provider. Search the North Dakota board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.