Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GREGORY S JACOB DDS
NPI 1992795710
Dentist in Des Plaines, IL

Q: What is Gregory Jacob's NPI number?

The NPI number for Gregory Jacob is 1992795710. It was assigned to this individual provider in the NPPES registry on October 24, 2005.

Q: What is Gregory Jacob's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Gregory Jacob was last updated on July 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 43 days 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.

Active since October 24, 2005

9672 REDING CIR, DES PLAINES, IL 60016(630) 347-0883 Get Directions Write a Review

NPPES record last updated: July 6, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Dr. Gregory S Jacob Dds NPPES

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

DR. GREGORY S JACOB DDS (NPI 1992795710) is an individual dentist in Des Plaines, Illinois, licensed in Illinois (019019708) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1992795710

Entity TypeIndividualMale

Primary Taxonomy122300000X

Provider Legal NameDR. GREGORY S JACOBCredential: DDS

Location Address9672 REDING CIRDes Plaines, IL 60016-1551

Mailing Address9672 Reding CirDes Plaines, IL 60016-1551 · (630) 347-0883 · Fax (847) 724-2113

Phone(630) 347-0883

Sole ProprietorYes

Enumeration DateOctober 24, 2005

Last NPPES UpdateJuly 6, 2026

NPPES CertifiedJuly 6, 2026

✔ NPI 1992795710 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers

Taxonomy Code122300000X

Licenses✔ Licensed in IL · 019019708✔ Licensed in WI · 593215

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.

9672 REDING CIR, Des Plaines, IL 60016

Open in Google Maps ↗

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 Gregory Jacob's NPI number?

The NPI number for Gregory Jacob is 1992795710. It was assigned to this individual provider in the NPPES registry on October 24, 2005.

Where is Gregory Jacob located?

Gregory Jacob practices at 9672 Reding Cir, Des Plaines, IL 60016. The listed phone number is (630) 347-0883.

What is Gregory Jacob'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 Gregory Jacob was last updated on July 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 43 days 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.