Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kyo Chul Koo

Behavior Technician in Fullerton, CA · enumerated 2020 · practices at Sage Behavior Services, Inc.

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

National Provider Identifier

1356974448

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Registry record

Entity type Individual (Type 1)

Name Kyo Chul Koo

Sex Male

Practice address 1600 N Acacia Ave, Fullerton, CA, 92831

Phone (714) 773-0077

Fax (714) 773-0067

Enumeration date Feb 17, 2020

Last updated in NPPES Feb 17, 2020

Taxonomy & licenses

106S00000X Behavior Technician 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

How do I verify Kyo Chul Koo's NPI record?

Cross-check NPI 1356974448 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1356974448 active?

Yes — as of the latest NPPES snapshot, NPI 1356974448 is active (record last updated 2020-02-17).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-17.