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

Clarence W Johnson, LCSW

Clinical Social Worker in Hesperia, CA · enumerated 2021.

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

National Provider Identifier

1689243826

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Registry record

Entity type Individual (Type 1)

Name Clarence W Johnson

Credential LCSW

Sex Male

Practice address Hesperia, CA, 92340

Phone (909) 694-6339

Enumeration date Jun 22, 2021

Last updated in NPPES May 14, 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 126181 (CA) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW 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

How do I verify Clarence Johnson's NPI record?

Cross-check NPI 1689243826 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1689243826 active?

Yes, as of the latest NPPES snapshot, NPI 1689243826 is active (record last updated 2026-05-14).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-14.