Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Irina Gres, BA

Behavior Analyst in Orange, CA · enumerated 2019.

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

National Provider Identifier

1831657907

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Registry record

Entity type Individual (Type 1)

Name Irina Gres

Credential BA

Sex Female

Practice address 438 E Katella Ave, Orange, CA, 92867

Phone (949) 370-4643

Enumeration date Mar 7, 2019

Last updated in NPPES Mar 7, 2019

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1831657907 active?

Yes, as of the latest NPPES snapshot, NPI 1831657907 is active (record last updated 2019-03-07).

How do I verify Irina Gres's NPI record?

Cross-check NPI 1831657907 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-07.