Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William G Messer, LGSW

Clinical Social Worker in Charleston, WV · enumerated 2012.

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

National Provider Identifier

1407191331

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Registry record

Entity type Individual (Type 1)

Name Mr. William G Messer

Credential LGSW

Sex Male

Practice address 1418 Maccorkle Ave Sw Ste A, Charleston, WV, 25303

Phone (304) 348-1288

Fax (304) 348-1017

Enumeration date Dec 4, 2012

Last updated in NPPES Dec 4, 2012

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License BP00944109 (WV) 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

Is NPI 1407191331 active?

Yes, as of the latest NPPES snapshot, NPI 1407191331 is active (record last updated 2012-12-04).

How do I verify William Messer's NPI record?

Cross-check NPI 1407191331 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-04.