What is Heather Williams's NPI number?

Heather Williams's National Provider Identifier (NPI) is 1770453607, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Heather Williams's specialty?

Heather Williams is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).

Where is Heather Williams located?

Heather Williams's practice location on file with NPPES is 1401 Highland Ave, Duarte, CA 91010-2523.

What is Heather Williams's phone number?

The practice phone number listed in the NPPES registry for Heather Williams is (657) 321-4000.

Is Heather Williams's NPI active?

Yes — Heather Williams's NPI (1770453607) is active in the NPPES registry as of the last update on 2025-11-06.

IndividualActive

Heather Williams

NPI 1770453607 · Specialist · Duarte, CA

Heather Williams is a Specialist provider in Duarte, CA (NPI 1770453607).

Provider details

NPI number: 1770453607
Entity type: Individual
Primary specialty: SpecialistOther Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

SpecialistPrimary174400000X
Other 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

1401 Highland Ave

Duarte, CA 91010-2523

Phone: (657) 321-4000

Street-level locationGet directions

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Mailing address