Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Natalie Mercedes Antonich

Speech-Language Assistant in Montebello, CA · enumerated 2017 · practices at Atlantic Recovery Services.

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

National Provider Identifier

1265978381

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Registry record

Entity type Individual (Type 1)

Name Natalie Mercedes Antonich

Sex Female

Practice address 1221 W Whittier Blvd, Montebello, CA, 90640

Phone (323) 726-8080

Enumeration date Jan 12, 2017

Last updated in NPPES Jan 12, 2017

Taxonomy & licenses

2355S0801X Speech-Language Assistant Speech, Language and Hearing Service Providers · License 4006 (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 Natalie Antonich practice?

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

What is the NPI number for Natalie Antonich?

The National Provider Identifier (NPI) for Natalie Antonich is 1265978381, 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 2017-01-12.