Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret M Henderson, PA-C

Physician Assistant in Puyallup, WA · enumerated 2005.

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

National Provider Identifier

1396722245

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Registry record

Entity type Individual (Type 1)

Name Margaret M Henderson

Credential PA-C

Sex Female

Practice address 3908 10th St Se, Puyallup, WA, 98374

Phone (253) 848-5951

Fax (253) 845-7073

Enumeration date Dec 30, 2005

Last updated in NPPES Sep 10, 2020

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA10001527 (WA) Secondary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA10001527 (WA) Primary

Other identifiers

Identifier	Type	State	Issuer
1009363	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.

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Frequently asked questions

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.

What specialty is Margaret Henderson?

Margaret Henderson is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-10.