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

Jefferson Cemore Hall IV

Clinical Social Worker in Westlake Village, CA · enumerated 2018.

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

National Provider Identifier

1629557921

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Registry record

Entity type Individual (Type 1)

Name Jefferson Cemore Hall IV

Sex Male

Practice address Westlake Village, CA, 91361

Phone (805) 601-6700

Enumeration date Aug 8, 2018

Last updated in NPPES Mar 4, 2026

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 117923 (CA) Primary

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 Jefferson Hall practice?

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

What is the NPI number for Jefferson Hall?

The National Provider Identifier (NPI) for Jefferson Hall is 1629557921, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-04.