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

Dr. Joseph Michael Zajac, DDS

Individual provider Dentist · NPI 1932258738

Dr. Joseph Michael Zajac, DDS is a Dentist in Downers Grove, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2007
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

518 Ogden Ave
Downers Grove, IL 60515-3064
Phone: (630) 271-0311
Fax: (630) 322-8158
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dentist (primary) Taxonomy 122300000X · Licence 019019110 (IL)

Record details

NPI number1932258738
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedJanuary 9, 2007
Last updated in NPPESApril 21, 2020
Certification dateApril 21, 2020
Mailing address518 Ogden Ave, Downers Grove, IL 60515-3064

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