Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leah Marie Fajardo Arellano

Behavior Analyst in Fairfield, CA · enumerated 2007.

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

National Provider Identifier

1750560587

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Registry record

Entity type Individual (Type 1)

Name Leah Marie Fajardo Arellano

Sex Female

Practice address 744 Empire St Ste 160, Fairfield, CA, 94533

Phone (707) 399-9413

Enumeration date Oct 29, 2007

Last updated in NPPES Aug 23, 2021

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator Other Service Providers Secondary

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.

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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 Leah Marie Arellano?

Leah Marie Arellano is registered in NPPES with the primary taxonomy of Behavior Analyst. 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 2021-08-23.