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NORTHSTAR ASSOCIATES, PLLC
NPI 1912921586
Clinic/Center - Sleep Disorder Diagnostic in Bellingham, WA

Active since July 27, 2006
1345 KING ST, BELLINGHAM, WA 98229(360) 676-1696(360) 676-6636 Get Directions Write a Review

NPPES record last updated: December 5, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 5, 2025, Dec 24, 2015 (2 updates tracked since 2015).

About Northstar Associates, Pllc NPPES

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

NORTHSTAR ASSOCIATES, PLLC (NPI 1912921586), doing business as Northstar Medical Specialists, is a healthcare organization registered as a sleep disorder diagnostic in Bellingham, Washington and active in the NPI registry since July 2006. The organization lists Christopher Paul Mathews, President, as its authorized official.

NPPES Registry Identity

NPI1912921586
Entity TypeOrganization
Primary Taxonomy261QS1200X
Legal Business NameNORTHSTAR ASSOCIATES, PLLC
Location Address1345 KING STBellingham, WA 98229-6223
Mailing Address1345 King StBellingham, WA 98229-6223 · (360) 676-1696 · Fax (360) 676-6636
Phone(360) 676-1696
Fax(360) 676-6636
Organization SubpartNo
Authorized OfficialChristopher Paul MathewsPresident · (360) 676-1696
Enumeration DateJuly 27, 2006
Last NPPES UpdateDecember 5, 20252 updates tracked since enumeration
NPPES CertifiedDecember 5, 2025
✔ NPI 1912921586 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyClinic/Center · Sleep Disorder DiagnosticAmbulatory Health Care Facilities
Taxonomy Code261QS1200X
License✔ Licensed in WA · 602 099 399
Also ListedPsychiatry & Neurology · Sleep MedicineTaxonomy 2084S0012X
Also ListedDurable Medical Equipment & Medical SuppliesTaxonomy 332B00000X
1345 KING ST, Bellingham, WA 98229
Open in Google Maps ↗

Other Names 1

Doing Business AsNorthstar Medical Specialists

Other Identifiers 3

Other122495122495WA · Premera
Other539108001WA · Group Health
Other4824NOWA · Regence

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company) and more.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)

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

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Northstar Associates, PLLC, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Zachary Webb, M.D.
Neurology
NPI 1063426146
1345 KING ST
Bellingham, WA 98229
(360) 676-1696
✔ PECOS✔ Accepts MedicareSame address
Anna Peters, NURSE PRACTITIONER
Nurse Practitioner
NPI 1649363433
1345 KING ST
Bellingham, WA 98229
(360) 676-1696
✔ 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 Northstar Associates, PLLC's NPI number?

The NPI number for Northstar Associates, PLLC is 1912921586. It was assigned to this organization in the NPPES registry on July 27, 2006. The provider is doing business as NorthStar Medical Specialists.

Where is Northstar Associates, PLLC located?

Northstar Associates, PLLC is located at 1345 King St, Bellingham, WA 98229. The listed phone number is (360) 676-1696.

What is Northstar Associates, PLLC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Sleep Disorder Diagnostic, with taxonomy code 261QS1200X.

Is Northstar Associates, PLLC enrolled in Medicare?

Yes. Northstar Associates, PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Northstar Associates, PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Northstar Associates, PLLC, in Neurology and Nurse Practitioner. 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. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Northstar Associates, PLLC accept?

Health plans from Ambetter Health, Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company) and Premera Blue Cross Blue Shield of Alaska list Northstar Associates, 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 Northstar Associates, PLLC was last updated on December 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.