Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Matthew Brant Johnson, LDO

Optician in Cambridge, MA · enumerated 2015.

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

National Provider Identifier

1144612334

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Registry record

Entity type Individual (Type 1)

Name Mr. Matthew Brant Johnson

Credential LDO

Sex Male

Practice address 1 Porter Sq, Cambridge, MA, 02140

Phone (617) 864-7005

Fax (617) 864-3250

Enumeration date Feb 24, 2015

Last updated in NPPES Feb 24, 2015

Taxonomy & licenses

156FC0801X Contact Lens Fitter Eye and Vision Services Providers · License 6429 (MA) Secondary

156FX1800X Optician Eye and Vision Services Providers · License 6429 (MA) 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

How do I verify Matthew Johnson's NPI record?

Cross-check NPI 1144612334 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1144612334 active?

Yes, as of the latest NPPES snapshot, NPI 1144612334 is active (record last updated 2015-02-24).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-02-24.