Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Lesley Leon

Q: What is the NPI number for Lesley Leon?

The National Provider Identifier (NPI) for Lesley Leon is 1164139093, a Type 1 (individual) record in the CMS NPPES registry.

Behavior Analyst in Los Angeles, CA · enumerated 2022.

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

National Provider Identifier

1164139093

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Registry record

Entity type Individual (Type 1)

Name Lesley Leon

Sex Female

Practice address 4401 Crenshaw Blvd Ste 215, Los Angeles, CA, 90043

Phone (323) 291-7100

Enumeration date Oct 31, 2022

Last updated in NPPES Jun 29, 2026

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License RBT-23-265424 (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 Lesley Leon practice?

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

What is the NPI number for Lesley Leon?

The National Provider Identifier (NPI) for Lesley Leon is 1164139093, 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 2026-06-29.