Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Hay, RSW

Social Worker in Lansing, MI · enumerated 2006.

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

National Provider Identifier

1316904527

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Registry record

Entity type Individual (Type 1)

Name William Hay

Credential RSW

Sex Male

Practice address 6639 Centurion Dr Ste 130, Lansing, MI, 48917

Phone (517) 322-3050

Fax (517) 709-7701

Enumeration date May 1, 2006

Last updated in NPPES Aug 23, 2022

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 6801071453 (MI) 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 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 William Hay?

William Hay is registered in NPPES with the primary taxonomy of Social Worker. 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 2022-08-23.