What is Gunn Hyun's NPI number?

Gunn Hyun's National Provider Identifier (NPI) is 1669368965, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Gunn Hyun's specialty?

Gunn Hyun is listed in the NPPES registry with a primary specialty of Behavior Technician (Behavioral Health & Social Service Providers).

Where is Gunn Hyun located?

Gunn Hyun's practice location on file with NPPES is 12437 Lewis St Ste 101, Garden Grove, CA 92840-4673.

What is Gunn Hyun's phone number?

The practice phone number listed in the NPPES registry for Gunn Hyun is (657) 444-9002.

Is Gunn Hyun's NPI active?

Yes — Gunn Hyun's NPI (1669368965) is active in the NPPES registry as of the last update on 2025-06-16.

IndividualActive

Gunn Hyun

NPI 1669368965 · Behavior Technician · Garden Grove, CA

Gunn Hyun is a Behavior Technician provider in Garden Grove, CA (NPI 1669368965).

Provider details

NPI number: 1669368965
Entity type: Individual
Primary specialty: Behavior TechnicianBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Behavior TechnicianPrimary106S00000X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(48/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
1 yr in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

12437 Lewis St Ste 101

Garden Grove, CA 92840-4673

Phone: (657) 444-9002

Street-level locationGet directions

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Mailing address