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KATHERINE PRISCILLA LARSON
NPI 1598456154
Social Worker in Everett, WA

Active since May 16, 2023PECOS Enrolled
1330 ROCKEFELLER AVE STE 140, EVERETT, WA 98201(425) 261-4210 Get Directions Write a Review

NPPES record last updated: April 9, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 9, 2025, May 16, 2023 (2 updates tracked since 2023).

About Katherine Priscilla Larson NPPES

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

KATHERINE PRISCILLA LARSON (NPI 1598456154) is an individual social worker in Everett, Washington, licensed in Washington (LW61584102) and active in the NPI registry since May 2023. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1598456154
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameKATHERINE PRISCILLA LARSON
Location Address1330 ROCKEFELLER AVE STE 140Everett, WA 98201-1682
Mailing Address1330 Rockefeller Ave Ste 140Everett, WA 98201-1682 · (425) 261-4210
Phone(425) 261-4210
Sole ProprietorYes
Enumeration DateMay 16, 2023
Last NPPES UpdateApril 9, 20252 updates tracked since enumeration
NPPES CertifiedApril 9, 2025
✔ NPI 1598456154 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
Licenses✔ Licensed in WA · LW61584102✔ Licensed in TN · 11875
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
Also ListedSocial Worker · ClinicalTaxonomy 1041C0700X · License 11875 (TN)
1330 ROCKEFELLER AVE STE 140, Everett, WA 98201
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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, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Katherine Priscilla Larson is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MICHELLE CHRISTINE JULSETH PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
1330 ROCKEFELLER AVE STE 140
EVERETT, WA 98201
Snohomish County (425) 261-4210
ANOOPA MATHEW JACOB DNP, ARNP, PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
1330 ROCKEFELLER AVE STE 140
EVERETT, WA 98201
Snohomish County (425) 261-4210

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 Katherine Larson's NPI number?

The NPI number for Katherine Larson is 1598456154. It was assigned to this individual provider in the NPPES registry on May 16, 2023.

Where is Katherine Larson located?

Katherine Larson practices at 1330 Rockefeller Ave Ste 140, Everett, WA 98201. The listed phone number is (425) 261-4210.

What is Katherine Larson's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Is Katherine Larson enrolled in Medicare?

Yes. Katherine Larson is registered in the Medicare PECOS enrollment system.

What insurance does Katherine Larson accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Katherine Larson 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 Katherine Larson was last updated on April 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.