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Michael James Thaanum, O.D.

Optometrist in Hayward, CA · enumerated 2007 · practices at Luxottica of America Inc..

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

National Provider Identifier

1285785915

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Registry record

Entity type Individual (Type 1)
Name Michael James Thaanum
Credential O.D.
Sex Male
Practice address 500 Southland Mall, Hayward, CA, 94545
Phone (510) 887-2800
Fax (510) 887-2812
Enumeration date Jan 16, 2007
Last updated in NPPES Oct 14, 2009

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 6571TPA (CA) 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
1306035118 Medicaid CA -
1306035118 Other CA RETIRED RAILROAD MEDICARE
6191070001 Other CA DME MACS PTAN

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

Where does Michael Thaanum practice?
The practice location on file with NPPES is in Hayward, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Michael Thaanum?
The National Provider Identifier (NPI) for Michael Thaanum is 1285785915, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-14.