Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Sonia Johnson

Clinical Social Worker in Los Angeles, CA · enumerated 2007.

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

National Provider Identifier

1609903921

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Registry record

Entity type Individual (Type 1)

Name Mrs. Sonia Johnson

Sex Female

Practice address 4211 Avalon Blvd, Los Angeles, CA, 90011

Phone (323) 432-5185

Fax (323) 432-5086

Enumeration date Feb 27, 2007

Last updated in NPPES May 9, 2013

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCS23435 (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 Sonia Johnson practice?

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

What is the NPI number for Sonia Johnson?

The National Provider Identifier (NPI) for Sonia Johnson is 1609903921, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-09.