Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Paul Alan Williamson, PH.D.

Psychologist in Anchorage, AK · enumerated 2012.

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

National Provider Identifier

1346585023

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Paul Alan Williamson

Credential PH.D.

Sex Male

Practice address 205 E Benson Blvd, Anchorage, AK, 99503

Phone (907) 227-7246

Enumeration date Dec 6, 2012

Last updated in NPPES Aug 18, 2022

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PSY.0004593 (CO) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 158904 (AK) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
PSY.0004593	Other	CO	COLORADO DEPARTMENT OF REGULATORY AGENCIES
158904	Other	AK	ALASKA DEPARTMENT OF COMMERCE, COMMUNITY, AND ECONOMIC DEVELOPMENT

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

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 Williamson?

Paul Williamson is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-18.