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DR. JOSEPH MICHAEL ZAJAC DDS
NPI 1932258738
Dentist in Downers Grove, IL

Active since January 09, 2007
518 OGDEN AVE, DOWNERS GROVE, IL 60515(630) 271-0311(630) 322-8158 Get Directions Write a Review

NPPES record last updated: April 21, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Joseph Michael Zajac Dds NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOSEPH MICHAEL ZAJAC DDS (NPI 1932258738) is an individual dentist in Downers Grove, Illinois, licensed in Illinois (019019110) and active in the NPI registry since January 2007.

NPPES Registry Identity

NPI1932258738
Entity TypeIndividualMale
Primary Taxonomy122300000X
Provider Legal NameDR. JOSEPH MICHAEL ZAJACCredential: DDS
Location Address518 OGDEN AVEDowners Grove, IL 60515-3064
Mailing Address518 Ogden AveDowners Grove, IL 60515-3064 · (630) 271-0311 · Fax (630) 322-8158
Phone(630) 271-0311
Fax(630) 322-8158
Sole ProprietorYes
Enumeration DateJanuary 9, 2007
Last NPPES UpdateApril 21, 2020
NPPES CertifiedApril 21, 2020
✔ NPI 1932258738 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers
Taxonomy Code122300000X
License✔ Licensed in IL · 019019110
Definition
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
518 OGDEN AVE, Downers Grove, IL 60515
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Humana, Renaissance Dental.Insurance ›

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ARGUETA DENTAL, PC
Dentist
518 OGDEN AVE
DOWNERS GROVE, IL 60515
Dupage County (630) 271-0300
DR. JULIO ARGUETA JR. DDS
Dentist (General Practice)
518 OGDEN AVE
DOWNERS GROVE, IL 60515
Dupage County (630) 271-0300
DR. JAMES A ZAJAC DDS
Dentist (General Practice)
518 OGDEN AVE
DOWNERS GROVE, IL 60515
Dupage County (630) 271-0300

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Joseph Zajac's NPI number?

The NPI number for Joseph Zajac is 1932258738. It was assigned to this individual provider in the NPPES registry on January 9, 2007.

Where is Joseph Zajac located?

Joseph Zajac practices at 518 Ogden Ave, Downers Grove, IL 60515. The listed phone number is (630) 271-0311.

What is Joseph Zajac's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

What insurance does Joseph Zajac accept?

Health plans from Humana and Renaissance Dental list Joseph Zajac as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Joseph Zajac was last updated on April 21, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.