Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Martha De Leon

Behavior Analyst in Valencia, CA · enumerated 2018.

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

National Provider Identifier

1225539117

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Registry record

Entity type Individual (Type 1)

Name Martha De Leon

Sex Female

Practice address 25115 Avenue Stanford Ste 100, Valencia, CA, 91355

Phone (818) 241-6780

Fax (818) 241-6853

Enumeration date Feb 26, 2018

Last updated in NPPES Aug 13, 2020

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-20-43522 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 Martha De Leon practice?

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

What is the NPI number for Martha De Leon?

The National Provider Identifier (NPI) for Martha De Leon is 1225539117, 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 2020-08-13.