Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Karen Lynne Joiner, ARNP

Nurse Practitioner in Longview, WA · enumerated 2005.

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

National Provider Identifier

1093791980

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Registry record

Entity type Individual (Type 1)

Name Mrs. Karen Lynne Joiner

Credential ARNP

Sex Female

Practice address 1706 Washington Way, Longview, WA, 98632

Phone (360) 423-9580

Fax (360) 577-6230

Enumeration date Dec 21, 2005

Last updated in NPPES Jan 14, 2010

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP30004069 (WA) Primary

Other identifiers

Identifier	Type	State	Issuer
9619610	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 Karen Joiner?

Karen Joiner is registered in NPPES with the primary taxonomy of Nurse Practitioner. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-14.