Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stuart M Shaffer, PH.D.

Clinical Psychologist in San Pedro, CA · enumerated 2007 · practices at Shaffer Psychological Institute.

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

National Provider Identifier

1366588675

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Registry record

Entity type Individual (Type 1)

Name Stuart M Shaffer

Credential PH.D.

Sex Male

Practice address 753 W Basin St, San Pedro, CA, 90731

Phone (310) 548-6868

Fax (310) 548-6833

Enumeration date Jan 30, 2007

Last updated in NPPES Mar 5, 2024

Taxonomy & licenses

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License PSY5613 (CA) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY5613 (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.

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Frequently asked questions

Where does Stuart Shaffer practice?

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

What is the NPI number for Stuart Shaffer?

The National Provider Identifier (NPI) for Stuart Shaffer is 1366588675, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Shaffer Psychological Institute Psychologist · San Pedro, CA NPI 1629115415

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-05.