Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William David Hart, O.D.

Occupational Vision Optometrist in Alpena, MI · enumerated 2006.

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

National Provider Identifier

1972610533

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Registry record

Entity type Individual (Type 1)

Name Dr. William David Hart

Credential O.D.

Sex Male

Practice address 1180 M-32 Rd, Store 2358, Alpena, MI, 49707

Phone (989) 354-7431

Enumeration date Aug 23, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

152WX0102X Occupational Vision Optometrist Eye and Vision Services Providers · License 4901002221 (MI) Primary

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

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 Hart?

William Hart is registered in NPPES with the primary taxonomy of Occupational Vision Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.