Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Armando Mateos

Behavior Analyst in Milpitas, CA · enumerated 2016.

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

National Provider Identifier

1861848558

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Registry record

Entity type Individual (Type 1)

Name Armando Mateos

Sex Male

Practice address 1603a S Main St, Milpitas, CA, 95035

Phone (408) 913-5019

Enumeration date May 11, 2016

Last updated in NPPES May 11, 2016

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers 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

What is the NPI number for Armando Mateos?

The National Provider Identifier (NPI) for Armando Mateos is 1861848558, a Type 1 (individual) record in the CMS NPPES registry.

Where does Armando Mateos practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-11.