Organization Active NPI

Triple Knot PLLC

  • Psychiatric/Mental Health Nurse Practitioner
  • Arlington, WA
National Provider Identifier
1770465007
Registry record updated Feb 11, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X
Legal business name
TRIPLE KNOT PLLC
Practice address
307 N Olympic Ave Ste 206
Arlington, WA 98223-1351
Phone
(360) 229-5954
Fax
(360) 200-0463
NPI assigned
Jul 25, 2025
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Feb 11, 2026

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

Authorized official

Name
Hallie GranvilleNPI 1649814658
Title
Ceo
Phone
(360) 395-5550

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Psychiatric/Mental Health Nurse PractitionerGroup: 193400000X SINGLE SPECIALTY GROUP 363LP0808X Primary

Addresses

Primary practice location

307 N Olympic Ave Ste 206
Arlington, WA 98223-1351

Mailing address

307 N Olympic Ave Ste 206
Arlington, WA 98223-1351
Phone (360) 229-5954

Other names 1

  • Triple Knot Wellness Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20260416000212 WA Part B Supplier - Clinic/Group Practice 8022584184 Receives reassigned benefits from 1 practitioner
Practice locations: Arlington, WA

National Provider Directory

National Provider Directory

Locations

307 N Olympic Ave
Ste 206
Arlington, WA 98223
Phone (360) 229-5954

Practitioners & affiliated clinicians

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1753401600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1770768000000",
    "number": "1770465007",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "307 N OLYMPIC AVE STE 206",
            "city": "ARLINGTON",
            "state": "WA",
            "postal_code": "982231351",
            "telephone_number": "360-229-5954",
            "fax_number": "360-200-0463"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "307 N OLYMPIC AVE STE 206",
            "city": "ARLINGTON",
            "state": "WA",
            "postal_code": "982231351",
            "telephone_number": "360-229-5954",
            "fax_number": "360-200-0463"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "TRIPLE KNOT PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-07-25",
        "last_updated": "2026-02-11",
        "certification_date": "2026-02-11",
        "status": "A",
        "authorized_official_last_name": "GRANVILLE",
        "authorized_official_first_name": "HALLIE",
        "authorized_official_title_or_position": "CEO",
        "authorized_official_telephone_number": "360-395-5550"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Triple Knot Wellness",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Arlington, WA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 11, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.