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TRIPLE KNOT PLLC
NPI 1770465007
Nurse Practitioner - Psychiatric/Mental Health in Arlington, WA

Active since July 25, 2025
307 N OLYMPIC AVE STE 206, ARLINGTON, WA 98223(360) 229-5954(360) 200-0463 Get Directions Write a Review

NPPES record last updated: February 11, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 10, 2025, Aug 5, 2025 (2 updates tracked since 2025).

About Triple Knot Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TRIPLE KNOT PLLC (NPI 1770465007), doing business as Triple Knot Wellness, is a healthcare organization registered as a psychiatric/mental health in Arlington, Washington and active in the NPI registry since July 2025. The organization lists Hallie Granville, Ceo, as its authorized official.

NPPES Registry Identity

NPI1770465007
Entity TypeOrganization
Primary Taxonomy363LP0808X
Legal Business NameTRIPLE KNOT PLLC
Location Address307 N OLYMPIC AVE STE 206Arlington, WA 98223-1351
Mailing Address307 N Olympic Ave Ste 206Arlington, WA 98223-1351 · (360) 229-5954 · Fax (360) 200-0463
Phone(360) 229-5954
Fax(360) 200-0463
Organization SubpartNo
Authorized OfficialHallie GranvilleCeo · (360) 395-5550
Enumeration DateJuly 25, 2025
Last NPPES UpdateFebruary 11, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 11, 2026
✔ NPI 1770465007 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
307 N OLYMPIC AVE STE 206, Arlington, WA 98223
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Other Names 1

Doing Business AsTriple Knot Wellness

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Triple Knot Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Triple Knot PLLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Hallie Granville, ARNP
Nurse Practitioner
NPI 1649814658
307 N OLYMPIC AVE STE 206
Arlington, WA 98223
(360) 229-5954
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Triple Knot PLLC's NPI number?

The NPI number for Triple Knot PLLC is 1770465007. It was assigned to this organization in the NPPES registry on July 25, 2025. The provider is doing business as Triple Knot Wellness.

Where is Triple Knot PLLC located?

Triple Knot PLLC is located at 307 N Olympic Ave Ste 206, Arlington, WA 98223. The listed phone number is (360) 229-5954.

What is Triple Knot PLLC's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Triple Knot PLLC enrolled in Medicare?

Yes. Triple Knot PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Triple Knot PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Nurse Practitioner) reassigns their Medicare billing to Triple Knot PLLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Triple Knot PLLC accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Triple Knot PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Triple Knot PLLC was last updated on February 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.