Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katharine Larson, PT, BCHN

Nutritionist in Snohomish, WA · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1609067818

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Registry record

Entity type Individual (Type 1)

Name Katharine Larson

Credential PT, BCHN

Sex Female

Practice address 12301 86th Pl Se, Snohomish, WA, 98290

Phone (425) 653-4308

Enumeration date Aug 5, 2007

Last updated in NPPES May 9, 2024

Taxonomy & licenses

133N00000X Nutritionist Dietary & Nutritional Service Providers · License NU61214108 (WA) Primary

174400000X Specialist Other Service Providers · License PT00010647 (WA) Secondary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

Other identifiers

Identifier	Type	State	Issuer
7018120	Medicaid	WA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Katharine Larson?

Katharine Larson is registered in NPPES with the primary taxonomy of Nutritionist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-09.