Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alejandra Hernandez De Leon

Behavior Technician in Vallejo, CA · enumerated 2018.

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

National Provider Identifier

1588131221

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Registry record

Entity type Individual (Type 1)

Name Alejandra Hernandez De Leon

Sex Female

Practice address 150 Glen Cove Marina Rd E Ste 102, Vallejo, CA, 94591

Phone (707) 553-1784

Enumeration date Oct 31, 2018

Last updated in NPPES Nov 24, 2021

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers Secondary

106S00000X Behavior Technician 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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Alejandra De Leon?

Alejandra De Leon is registered in NPPES with the primary taxonomy of Behavior Technician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-24.