Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Silvia Andresen, MA - CCC, SLP

Speech-Language Pathologist in North Hollywood, CA · enumerated 2007.

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

National Provider Identifier

1477675585

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Registry record

Entity type Individual (Type 1)

Name Silvia Andresen

Credential MA - CCC, SLP

Sex Female

Practice address 6400 Laurel Canyon Blvd Ste 400, North Hollywood, CA, 91606

Phone (818) 763-0136

Fax (818) 763-3838

Enumeration date Apr 6, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 12974 (CA) Primary

SLP · Speech-Language Pathologist: A licensed clinician treating speech, language, and swallowing disorders. About the SLP 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 Silvia Andresen practice?

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

What is the NPI number for Silvia Andresen?

The National Provider Identifier (NPI) for Silvia Andresen is 1477675585, 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 2007-07-08.