Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William J Hooker, O.D.

Occupational Vision Optometrist in Haslett, MI · enumerated 2005 · practices at Advanced Audiology, LLC.

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

National Provider Identifier

1639167505

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Registry record

Entity type Individual (Type 1)

Name Dr. William J Hooker

Credential O.D.

Sex Male

Practice address 1536 Haslett Rd, Haslett, MI, 48840

Phone (517) 339-4100

Fax (517) 339-4199

Enumeration date Oct 13, 2005

Last updated in NPPES Jul 13, 2026

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 4901002909 (MI) Secondary

152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License 4901002909 (MI) Secondary

152WL0500X Low Vision Rehabilitation Optometrist Eye and Vision Services Providers · License 4901002909 (MI) Secondary

152WP0200X Pediatric Optometrist Eye and Vision Services Providers · License 4901002909 (MI) Secondary

152WX0102X Occupational Vision Optometrist Eye and Vision Services Providers · License 4901002909 (MI) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
WH002909	Other	MI	BCBS OF MICHIGAN
22-70003	Other	MI	PHP FAMILY CARE
22-00003	Other	MI	PHP FOF MIDMICHIGAN

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 1639167505 active?

Yes, as of the latest NPPES snapshot, NPI 1639167505 is active (record last updated 2026-07-13).

How do I verify William Hooker's NPI record?

Cross-check NPI 1639167505 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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Daniel Langhorst Optometrist · Haslett, MI NPI 1447509609 Advanced Audiology, LLC Audiologist-Hearing Aid Fitter · Haslett, MI NPI 1417512682

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