Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Chelsea Rae Spencer

Behavior Analyst in Palo Alto, CA · enumerated 2017.

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

National Provider Identifier

1043729957

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Registry record

Entity type Individual (Type 1)

Name Chelsea Rae Spencer

Sex Female

Practice address 3000 El Camino Real Bldg 4, Palo Alto, CA, 94306

Phone (408) 674-6591

Enumeration date Sep 22, 2017

Last updated in NPPES Jul 8, 2026

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.

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Frequently asked questions

Where does Chelsea Spencer practice?

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

What is the NPI number for Chelsea Spencer?

The National Provider Identifier (NPI) for Chelsea Spencer is 1043729957, 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 2026-07-08.