Heidi Nicole Oien, FNP-C

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

202827 Issued in ND

Practice address

1301 15TH Ave W
Williston, ND 58801-3821

Phone

(701) 774-7400

NPI assigned

Jul 9, 2025

Last updated

Jul 9, 2025By the provider in NPPES

Sex

Female

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other names 1

• Heidi Nicole Benter Former name

Medicare fee-for-service enrollment

Enrolled in ND

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mercy Medical CenterGroup PAC ID 7416851381, shared by 2 NPIs, 78 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• CHI St Alexius Health Williston Hospital, Williston, ND, CCN 351334

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: heidioien@normd.allscriptsdirect.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Mercy Medical Center

  • Psychiatry Physician
  • Williston, ND
  • NPI 1801928593
  Medicare reassignment NPD
• Mercy Medical Center

  dba Chi St Alexius Health Williston

  • Critical Access Hospital
  • Williston, ND
  • NPI 1902824576
  Medicare reassignment NPD
• Mercy Home Care

  • Home Health Agency
  • Williston, ND
  • NPI 1871593723
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Mercy Medical Center

  dba Chi St Alexius Health Williston

  • Critical Access Hospital
  • Williston, ND
  • NPI 1902824576
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1752019200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752019200000",
    "number": "1669362604",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "107 10TH ST NW",
            "city": "BEULAH",
            "state": "ND",
            "postal_code": "585236243",
            "telephone_number": "701-799-4054"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1301 15TH AVE W",
            "city": "WILLISTON",
            "state": "ND",
            "postal_code": "588013821",
            "telephone_number": "701-774-7400"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OIEN",
        "first_name": "HEIDI",
        "middle_name": "NICOLE",
        "name_prefix": "Mrs.",
        "credential": "FNP-C",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-07-09",
        "last_updated": "2025-07-09",
        "certification_date": "2025-07-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "ND",
            "license": "202827",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "HEIDI",
            "last_name": "BENTER",
            "middle_name": "NICOLE",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Obhg North Dakota PC
• Karin Ocain
• Angela Oelke
• Madison Jade Ofert
• Hannah Clark Oglesby
• Danielle Olds
• Kynzie Oliver, PAC
• Colleen Renea Olson
• Mark A Olson, MD
• Vikki Olson

• Nurse Practitioner in Williston, ND
• Providers in Williston, ND by specialty
• Nurse Practitioner in North Dakota

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 9, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.