Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Paul V Williams, M.D.

Allergy & Immunology Physician in Seattle, WA · enumerated 2006.

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

National Provider Identifier

1306872551

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Registry record

Entity type Individual (Type 1)

Name Paul V Williams

Credential M.D.

Sex Male

Practice address 9725 3rd Ave Ne Ste 500, Seattle, WA, 98115

Phone (206) 527-1200

Fax (206) 527-2514

Enumeration date Jun 22, 2006

Last updated in NPPES Sep 3, 2019

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License MD00016426 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
W15332	Other	WA	REGENCE
030001513	Other	WA	RAIL ROAD MEDICARE
030004263	Other	WA	MEDICARE RAILROAD
120835	Other	WA	CIGNA
030004274	Other	WA	MEDICARE RAILROAD
8168007	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 Paul Williams?

Paul Williams is registered in NPPES with the primary taxonomy of Allergy & Immunology Physician. 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 2019-09-03.