NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Joanne M. Hamilton Psychologist A Professional Corporation

Clinical Neuropsychologist in San Diego, CA · enumerated 2007 · authorized official Joanne Hamilton, Sole Owner.

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

National Provider Identifier

1144428467

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Joanne M. Hamilton Psychologist A Professional Corporation
Practice address 9968 Hibert St Ste 105, San Diego, CA, 92131
Fax (858) 312-8460
Enumeration date Jul 8, 2007
Last updated in NPPES Mar 11, 2026

Taxonomy & classification

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License 18998 (CA) Primary

Authorized official

Name Joanne Hamilton
Title Sole Owner

Other identifiers

Identifier Type State Issuer
1649211178 Other CA PRACTITIONER NPI

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2026-03-11. Verify at npiregistry.cms.hhs.gov.
Where is Joanne M. Hamilton Psychologist A Professional Corporation located?
The practice location on file with NPPES is in San Diego, CA.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-11.