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

Catherine A. Johnson, M.A., CCC

Speech-Language Pathologist in San Juan Capistrano, CA · enumerated 2007.

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

National Provider Identifier

1821138777

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Registry record

Entity type Individual (Type 1)

Name Catherine A. Johnson

Credential M.A., CCC

Sex Female

Practice address San Juan Capistrano, CA, 92675

Phone (949) 487-5251

Fax (949) 487-5242

Enumeration date Feb 8, 2007

Last updated in NPPES Nov 12, 2010

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

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License SP 8097 (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 Catherine Johnson practice?

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

What is the NPI number for Catherine Johnson?

The National Provider Identifier (NPI) for Catherine Johnson is 1821138777, a Type 1 (individual) record in the CMS NPPES registry.

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Nubia Tellis Marriage & Family Therapist · San Juan Capistrano, CA NPI 1598007429

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-11-12.