Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David Ierston-Brown

Optometrist in Chula Vista, CA · enumerated 2025.

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

National Provider Identifier

1043105315

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Registry record

Entity type Individual (Type 1)

Name David Ierston-Brown

Sex Male

Practice address 342 F St, Chula Vista, CA, 91910

Phone (619) 422-1471

Enumeration date Jun 9, 2025

Last updated in NPPES Jun 17, 2026

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 35992 (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.

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Frequently asked questions

Where does David Ierston-Brown practice?

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

What is the NPI number for David Ierston-Brown?

The National Provider Identifier (NPI) for David Ierston-Brown is 1043105315, 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 2026-06-17.