NPI Portal NPI Lookup & Verification

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

Ms. Linda Joyce Marquez, M.S., P.T., M.B.A.

Physical Therapist in Glendale, CA · enumerated 2010.

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

National Provider Identifier

1821315490

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Registry record

Entity type Individual (Type 1)
Name Ms. Linda Joyce Marquez
Credential M.S., P.T., M.B.A.
Sex Female
Practice address Glendale, CA, 91207
Phone (818) 502-2121
Fax (818) 502-2124
Enumeration date Apr 22, 2010
Last updated in NPPES Apr 22, 2010

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

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 34739 (CA) Primary
PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

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 Linda Marquez's NPI record?
Cross-check NPI 1821315490 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1821315490 active?
Yes, as of the latest NPPES snapshot, NPI 1821315490 is active (record last updated 2010-04-22).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-04-22.