What is Ashley Duffield's NPI number?

Ashley Duffield's National Provider Identifier (NPI) is 1487535928, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Ashley Duffield's specialty?

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

Where is Ashley Duffield located?

Ashley Duffield's practice location on file with NPPES is 3419 Valle Verde Dr, Napa, CA 94558-2414.

What is Ashley Duffield's phone number?

The practice phone number listed in the NPPES registry for Ashley Duffield is (707) 299-8250.

Is Ashley Duffield's NPI active?

Yes — Ashley Duffield's NPI (1487535928) is active in the NPPES registry as of the last update on 2025-09-10.

IndividualActive

Ashley Duffield

NPI 1487535928 · Behavior Technician · Napa, CA

Ashley Duffield is a Behavior Technician provider in Napa, CA (NPI 1487535928).

Provider details

NPI number: 1487535928
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

3419 Valle Verde Dr

Napa, CA 94558-2414

Phone: (707) 299-8250

Fax: (707) 635-8215

Street-level locationGet directions

More CA providers

Mailing address