1. Home
  2. Directory
  3. Illinois
  4. Chicago
  5. Dentist
  6. NPI Profile

DR. WILLIAM PAUL DEJEAN DDS
NPI 1770710857
Dentist in Chicago, IL

Active since June 16, 2009
1363 N ASHLAND AVE, CHICAGO, IL 60622(773) 384-3885(773) 384-0445 Get Directions Write a Review

NPPES record last updated: June 16, 2009. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. William Paul Dejean Dds NPPES

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

DR. WILLIAM PAUL DEJEAN DDS (NPI 1770710857) is an individual dentist in Chicago, Illinois, licensed in Illinois (019020647) and active in the NPI registry since June 2009.

NPPES Registry Identity

NPI1770710857
Entity TypeIndividualMale
Primary Taxonomy122300000X
Provider Legal NameDR. WILLIAM PAUL DEJEANCredential: DDS
Location Address1363 N ASHLAND AVEChicago, IL 60622-2262
Mailing Address1363 N Ashland AveChicago, IL 60622-2262 · (773) 384-3885 · Fax (773) 384-0445
Phone(773) 384-3885
Fax(773) 384-0445
Sole ProprietorYes
Enumeration DateJune 16, 2009
✔ NPI 1770710857 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers
Taxonomy Code122300000X
License✔ Licensed in IL · 019020647
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.
1363 N ASHLAND AVE, Chicago, IL 60622
Open in Google Maps ↗

Other Providers at the Same Location NPPES

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

DR. JACK GEISSLER DMD
Dentist
1363 N ASHLAND AVE
CHICAGO, IL 60622
Cook County (815) 922-3635

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 William Dejean's NPI number?

The NPI number for William Dejean is 1770710857. It was assigned to this individual provider in the NPPES registry on June 16, 2009.

Where is William Dejean located?

William Dejean practices at 1363 N Ashland Ave, Chicago, IL 60622. The listed phone number is (773) 384-3885.

What is William Dejean's specialty?

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

When was this NPI record last updated?

The NPPES record for William Dejean was last updated on June 16, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.