Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Matthew Littlejohn, OD

Optometrist in Casa Grande, AZ · enumerated 2006 · practices at Matthew Littlejohn Od PC.

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

National Provider Identifier

1780603142

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Registry record

Entity type Individual (Type 1)

Name Dr. Matthew Littlejohn

Credential OD

Sex Male

Practice address Casa Grande, AZ, 85122

Phone (520) 836-9606

Fax (520) 836-3964

Enumeration date Jul 18, 2006

Last updated in NPPES May 5, 2020

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 1525 (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
387419	Medicaid	AZ	-
D09166	Other	-	RAILROAD MEDICARE
DU5966	Other	AZ	RAILROAD MEDICARE
152W00000X	Other	AZ	TAXONOMY

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

How do I verify Matthew Littlejohn's NPI record?

Cross-check NPI 1780603142 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1780603142 active?

Yes, as of the latest NPPES snapshot, NPI 1780603142 is active (record last updated 2020-05-05).

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Matthew Littlejohn Od PC Optometrist · Casa Grande, AZ NPI 1326483058

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-05-05.