Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Andrea Thornton, PHD

Psychologist in Duarte, CA · enumerated 2006.

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

National Provider Identifier

1033295613

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Ms. Andrea Thornton

Credential PHD

Sex Female

Practice address 1500 E Duarte Rd, Duarte, CA, 91010

Phone (626) 359-8111

Enumeration date Oct 27, 2006

Last updated in NPPES Aug 1, 2011

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PSY19135 (CA) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
PSY191350	Medicaid	CA	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1033295613 active?

Yes, as of the latest NPPES snapshot, NPI 1033295613 is active (record last updated 2011-08-01).

How do I verify Andrea Thornton's NPI record?

Cross-check NPI 1033295613 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-01.