Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Harrer, PHD

Psychologist in Milpitas, CA · enumerated 2006.

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

National Provider Identifier

1891854279

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Registry record

Entity type Individual (Type 1)

Name Margaret Harrer

Credential PHD

Sex Female

Practice address 611 S Milpitas Blvd, Milpitas, CA, 95035

Phone (408) 945-2915

Fax (408) 945-5007

Enumeration date Dec 8, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PSY 16092 (CA) Primary

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

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Margaret Harrer practice?

The practice location on file with NPPES is in Milpitas, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Margaret Harrer?

The National Provider Identifier (NPI) for Margaret Harrer is 1891854279, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.