Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thomas J Johnson, O.D.

Optometrist in Flagstaff, AZ · enumerated 2006.

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

National Provider Identifier

1942214143

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Registry record

Entity type Individual (Type 1)

Name Thomas J Johnson

Credential O.D.

Sex Male

Practice address 350 N Switzer Canyon Dr, Suite 130, Flagstaff, AZ, 86001

Phone (928) 773-9697

Fax (928) 774-4224

Enumeration date Jul 27, 2006

Last updated in NPPES Mar 20, 2015

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 01128 (AZ) 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
599425	Medicaid	AZ	-

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 Thomas Johnson?

Thomas Johnson is registered in NPPES with the primary taxonomy of Optometrist. 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 2015-03-20.