Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Clayton Mattson

Optician in Alpena, MI · enumerated 2026.

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

National Provider Identifier

1891649224

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Registry record

Entity type Individual (Type 1)

Name John Clayton Mattson

Sex Male

Practice address 1180 M 32 W, Alpena, MI, 49707

Phone (989) 354-7431

Enumeration date Feb 23, 2026

Last updated in NPPES Feb 23, 2026

Taxonomy & licenses

156FX1800X Optician Eye and Vision Services Providers · License 260731 (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

What specialty is John Mattson?

John Mattson is registered in NPPES with the primary taxonomy of Optician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-23.