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

Dr. William Prosniewski, DMD

Individual provider General Practice Dentistry · NPI 1205405685

Dr. William Prosniewski, DMD is a General Practice Dentistry in Bartlett, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2021
What do these letters mean?
DMD — Doctor of Dental Medicine
A dentist. Identical training and licensing to a DDS.

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Practice location Address checks out

116 W Bartlett Ave
Bartlett, IL 60103-4282
Phone: (630) 837-2779
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence 019033158 (IL)

Record details

NPI number1205405685
Entity typeIndividual (Type 1)
GenderMale
Credentials DMD
Sole proprietorYes
NPI enumeratedJune 21, 2021
Last updated in NPPESJune 21, 2021
Certification dateJune 21, 2021
Mailing address989 La Costa Ave, Bartlett, IL 60103-6609

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