Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Henry Davis, R.A.S.

Addiction (Substance Use Disorder) Counselor in Carson, CA · enumerated 2009.

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

National Provider Identifier

1487895181

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Registry record

Entity type Individual (Type 1)

Name William Henry Davis

Credential R.A.S.

Sex Male

Practice address 637 E Albertoni St Ste 200, Carson, CA, 90746

Phone (310) 217-0616

Fax (310) 217-0545

Enumeration date Mar 10, 2009

Last updated in NPPES Mar 10, 2009

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Primary

Other identifiers

Identifier	Type	State	Issuer
197247	Medicaid	CA	-

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 NPI 1487895181 active?

Yes, as of the latest NPPES snapshot, NPI 1487895181 is active (record last updated 2009-03-10).

How do I verify William Davis's NPI record?

Cross-check NPI 1487895181 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Marcia Zuric Addiction (Substance Use Disorder) Counselor · Carson, CA NPI 1255580676

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-03-10.