What is Ellen Woo's NPI number?

Ellen Woo's National Provider Identifier (NPI) is 1013840750, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Ellen Woo's specialty?

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

Where is Ellen Woo located?

Ellen Woo's practice location on file with NPPES is 701 W Kimberly Ave Ste 220, Placentia, CA 92870-6314.

What is Ellen Woo's phone number?

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

Is Ellen Woo's NPI active?

Yes — Ellen Woo's NPI (1013840750) is active in the NPPES registry as of the last update on 2026-06-03.

IndividualActive

Ellen Woo

NPI 1013840750 · Behavior Technician · Placentia, CA

Ellen Woo is a Behavior Technician provider in Placentia, CA (NPI 1013840750).

Provider details

NPI number: 1013840750
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(46/100 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

701 W Kimberly Ave Ste 220

Placentia, CA 92870-6314

Phone: (714) 879-4274

Street-level locationGet directions

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Mailing address