Individual provider Active NPI

Grace Kowalski, RN

  • Addiction (Substance Use Disorder) Registered Nurse
  • Oak Harbor, WA
National Provider Identifier
1164213898
Registry record updated May 13, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Addiction (Substance Use Disorder) Registered NurseTaxonomy code 163WA0400X
License
RN61072342 Issued in WA
Practice address
275 NE 10TH Ave
Oak Harbor, WA 98277-5903
Phone
(360) 499-7011
NPI assigned
May 13, 2025
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 13, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Addiction (Substance Use Disorder) Registered Nurse 163WA0400X RN61072342 WA Primary

Addresses

Primary practice location

275 NE 10TH Ave
Oak Harbor, WA 98277-5903

Mailing address

7440 W Marginal Way S
Seattle, WA 98108-4141

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
Credentials
Registered Nurse

State licenses

LicenseStateTypeSpecialty
RN61072342WAMDAddiction (Substance Use Disorder) Registered Nurse

Practice roles

OrganizationSpecialtyStatusNew patients
Pioneer Human Services CurrentSince May 18, 2025 Accepting new patients

Locations

7440 W Marginal Way S
Seattle, WA 98108
Phone (206) 768-1990

Organizations & group practices 1

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

NPI Registry JSON

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

{
    "created_epoch": "1747094400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1747094400000",
    "number": "1164213898",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7440 W MARGINAL WAY S",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981084141"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "275 NE 10TH AVE",
            "city": "OAK HARBOR",
            "state": "WA",
            "postal_code": "982775903",
            "telephone_number": "360-499-7011"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KOWALSKI",
        "first_name": "GRACE",
        "credential": "RN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-05-13",
        "last_updated": "2025-05-13",
        "certification_date": "2025-05-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163WA0400X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Addiction (Substance Use Disorder)",
            "state": "WA",
            "license": "RN61072342",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Oak Harbor, WA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 13, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.