What is Thomas Williams's NPI number?

Thomas Williams's National Provider Identifier (NPI) is 1780678466, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Thomas Williams's specialty?

Thomas Williams is listed in the NPPES registry with a primary specialty of Dentist (Dental Providers).

Where is Thomas Williams located?

Thomas Williams's practice location on file with NPPES is 100 Bryant St, Dubuque, IA 52003-7405.

What is Thomas Williams's phone number?

The practice phone number listed in the NPPES registry for Thomas Williams is (563) 557-1440.

Is Thomas Williams's NPI active?

Yes — Thomas Williams's NPI (1780678466) is active in the NPPES registry as of the last update on 2026-03-27.

IndividualActive

Thomas Williams, DDS

NPI 1780678466 · Dentist · Dubuque, IA

Thomas Williams, DDS is a Dentist provider in Dubuque, IA (NPI 1780678466).

Provider details

NPI number: 1780678466
Entity type: Individual
Primary specialty: DentistDental Providers
Credential: DDS
Sex: Male
Sole proprietor: Yes
License: 23154 (CA)

Specialties & taxonomies

DentistPrimary122300000XLicense 05935 (IA)
Dental Providers
Dentist122300000XLicense 23154 (CA)
Dental Providers
Dentist122300000XLicense 5000989015 (WI)
Dental Providers

Profile Score

Detailed profile(91/100 index)

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

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
100% 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

100 Bryant St

Dubuque, IA 52003-7405

Phone: (563) 557-1440

Fax: (563) 557-7001

Street-level locationGet directions

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Mailing address