What is William Sack's NPI number?

William Sack's National Provider Identifier (NPI) is 1487817615, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Sack's specialty?

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

Where is William Sack located?

William Sack's practice location on file with NPPES is 425 Burlington Ave, Downers Grove, IL 60515-5127.

What is William Sack's phone number?

The practice phone number listed in the NPPES registry for William Sack is (630) 968-5900.

Is William Sack's NPI active?

Yes — William Sack's NPI (1487817615) is active in the NPPES registry as of the last update on 2008-07-08.

IndividualActive

William Sack, D.D.S.

NPI 1487817615 · Dentist · Downers Grove, IL

William Sack, D.D.S. is a Dentist provider in Downers Grove, IL (NPI 1487817615).

Provider details

NPI number: 1487817615
Entity type: Individual
Primary specialty: DentistDental Providers
Credential: D.D.S.
Sex: Male
Sole proprietor: No
License: 019018088 (IL)

Specialties & taxonomies

DentistPrimary122300000XLicense 019018088 (IL)
Dental Providers

Profile Score

Detailed profile(87/100 index)

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

Registry tenure38% of score
17 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

425 Burlington Ave

Downers Grove, IL 60515-5127

Phone: (630) 968-5900

Fax: (630) 968-5901

Street-level locationGet directions

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Mailing address