Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Cherilyn Louise Armstrong, LICSW, LCSW

Clinical Social Worker in Walla Walla, WA · enumerated 2012.

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

National Provider Identifier

1124378872

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Registry record

Entity type Individual (Type 1)

Name Cherilyn Louise Armstrong

Credential LICSW, LCSW

Sex Female

Practice address Walla Walla, WA, 99362

Phone (541) 969-2345

Enumeration date Sep 10, 2012

Last updated in NPPES Sep 10, 2012

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 60295761 (WA) Primary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License L5171 (OR) Secondary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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 Cherilyn Armstrong?

Cherilyn Armstrong is registered in NPPES with the primary taxonomy of Clinical Social Worker. 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 2012-09-10.