Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William E Sack, DDS

Individual provider Dentist · NPI 1487817615

William E Sack, DDS is a Dentist in Downers Grove, Illinois. Licensed in Illinois. Registered with an NPI since 2008.

Licensed in
IL
In the registry since
2008
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

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Practice location Address checks out

425 Burlington Ave
Downers Grove, IL 60515-5127
Phone: (630) 968-5900
Fax: (630) 968-5901
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dentist (primary) Taxonomy 122300000X · Licence 019018088 (IL)

Record details

NPI number1487817615
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedJuly 8, 2008
Last updated in NPPESJuly 8, 2008
Mailing address425 Burlington Ave, Downers Grove, IL 60515-5127

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