Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mathew Byron Sullivan, PT

Physical Therapist in Los Alamitos, CA · enumerated 2013.

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

National Provider Identifier

1134469406

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Registry record

Entity type Individual (Type 1)

Name Dr. Mathew Byron Sullivan

Credential PT

Sex Male

Practice address 5152 Katella Ave, Suite 106, Los Alamitos, CA, 90720

Phone (562) 431-6004

Fax (562) 431-9854

Enumeration date Feb 25, 2013

Last updated in NPPES Jul 15, 2016

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 28874 (CA) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

Other identifiers

Identifier	Type	State	Issuer
PT28874	Other	-	PT LICENSE

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 Mathew Sullivan's NPI record?

Cross-check NPI 1134469406 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1134469406 active?

Yes, as of the latest NPPES snapshot, NPI 1134469406 is active (record last updated 2016-07-15).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-07-15.