What is Vivian Eng's NPI number?

Vivian Eng's National Provider Identifier (NPI) is 1639030984, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Vivian Eng's specialty?

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

Where is Vivian Eng located?

Vivian Eng's practice location on file with NPPES is 5711 Vista Dr Ste 100, Ferndale, WA 98248-8333.

What is Vivian Eng's phone number?

The practice phone number listed in the NPPES registry for Vivian Eng is (360) 746-4092.

Is Vivian Eng's NPI active?

Yes — Vivian Eng's NPI (1639030984) is active in the NPPES registry as of the last update on 2025-11-18.

IndividualActive

Vivian Eng

NPI 1639030984 · Behavior Technician · Ferndale, WA

Vivian Eng is a Behavior Technician provider in Ferndale, WA (NPI 1639030984).

Provider details

NPI number: 1639030984
Entity type: Individual
Primary specialty: Behavior TechnicianBehavioral Health & Social Service Providers
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

5711 Vista Dr Ste 100

Ferndale, WA 98248-8333

Phone: (360) 746-4092

Street-level locationGet directions

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Mailing address