Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

April Violet Johnson, LCSW

Clinical Social Worker in Fairfield, CA · enumerated 2013.

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

National Provider Identifier

1568898039

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Registry record

Entity type Individual (Type 1)

Name April Violet Johnson

Credential LCSW

Sex Female

Practice address 2420 Martin Rd Ste 200, Fairfield, CA, 94534

Phone (707) 399-4520

Fax (707) 399-4521

Enumeration date Sep 17, 2013

Last updated in NPPES Apr 29, 2021

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW98625 (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

Where does April Johnson practice?

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

What is the NPI number for April Johnson?

The National Provider Identifier (NPI) for April Johnson is 1568898039, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-29.