NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Annessa Leeann Brock, BCBA

Behavior Analyst in Pasadena, CA · enumerated 2019.

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

National Provider Identifier

1740845957

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Annessa Leeann Brock
Credential BCBA
Sex Female
Practice address 1055 E Colorado Blvd Ste 560, Pasadena, CA, 91106
Fax (818) 241-6853
Enumeration date May 2, 2019
Last updated in NPPES Aug 30, 2021

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 52270 (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 Annessa Brock practice?
The practice location on file with NPPES is in Pasadena, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Annessa Brock?
The National Provider Identifier (NPI) for Annessa Brock is 1740845957, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-30.