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

Alan S Williams, LPT

Licensed Psychiatric Technician in Antelope, CA · enumerated 2009.

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

National Provider Identifier

1649505868

Verified

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Registry record

Entity type Individual (Type 1)

Name Alan S Williams

Credential LPT

Sex Male

Practice address Antelope, CA, 95843

Phone (916) 833-0222

Enumeration date Oct 6, 2009

Last updated in NPPES Oct 6, 2009

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

Taxonomy & licenses

167G00000X Licensed Psychiatric Technician Nursing Service Providers · License 19653 (CA) Primary

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

How do I verify Alan Williams's NPI record?

Cross-check NPI 1649505868 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1649505868 active?

Yes, as of the latest NPPES snapshot, NPI 1649505868 is active (record last updated 2009-10-06).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-06.