What is Madelyn Leong's NPI number?

Madelyn Leong's National Provider Identifier (NPI) is 1477422616, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Madelyn Leong's specialty?

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

Where is Madelyn Leong located?

Madelyn Leong's practice location on file with NPPES is 713 W Commonwealth Ave Ste C, Fullerton, CA 92832-1612.

What is Madelyn Leong's phone number?

The practice phone number listed in the NPPES registry for Madelyn Leong is (714) 879-4274.

Is Madelyn Leong's NPI active?

Yes — Madelyn Leong's NPI (1477422616) is active in the NPPES registry as of the last update on 2025-11-04.

IndividualActive

Madelyn Leong

NPI 1477422616 · Behavior Technician · Fullerton, CA

Madelyn Leong is a Behavior Technician provider in Fullerton, CA (NPI 1477422616).

Provider details

NPI number: 1477422616
Entity type: Individual
Primary specialty: Behavior TechnicianBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Behavior TechnicianPrimary106S00000X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(47/100 index)

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

Registry tenure38% of score
Under 1 yr in 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

713 W Commonwealth Ave Ste C

Fullerton, CA 92832-1612

Phone: (714) 879-4274

Street-level locationGet directions

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Mailing address