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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. GREGORY MICHAEL KARR DDS
NPI 1740351949
Dentist in Elgin, IL

Active since November 11, 2006
431 SUMMIT ST, SUITE 105, ELGIN, IL 60120(847) 742-6717(847) 742-3951 Get Directions Write a Review

NPPES record last updated: July 26, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Gregory Michael Karr Dds NPPES

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

DR. GREGORY MICHAEL KARR DDS (NPI 1740351949) is an individual dentist in Elgin, Illinois, licensed in Illinois (01919004) and active in the NPI registry since November 2006.

NPPES Registry Identity

NPI1740351949
Entity TypeIndividualMale
Primary Taxonomy122300000X
Provider Legal NameDR. GREGORY MICHAEL KARRCredential: DDS
Location Address431 SUMMIT ST, SUITE 105Elgin, IL 60120-3861
Mailing Address431 Summit St, Suite 105Elgin, IL 60120-3861 · (847) 742-6717 · Fax (847) 742-3951
Phone(847) 742-6717
Fax(847) 742-3951
Sole ProprietorYes
Enumeration DateNovember 11, 2006
Last NPPES UpdateJuly 26, 2026
✔ NPI 1740351949 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers
Taxonomy Code122300000X
License✔ Licensed in IL · 01919004
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.
431 SUMMIT ST, Elgin, IL 60120
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Other Providers at the Same Location NPPES 10

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

WON SUNG DDS
Dentist
431 SUMMIT ST, SUITE 104
ELGIN, IL 60120
Cook County (213) 249-1765
PINNACLE ANESTHESIA, LTD
Anesthesiology
431 SUMMIT ST
ELGIN, IL 60120
Cook County (847) 289-8822
MRS. JULIA ANN EDWARDS PA-C
Physician Assistant (Medical)
431 SUMMIT ST
ELGIN, IL 60120
Cook County (847) 289-8822
DR. HADI MOTEN M.D.
Anesthesiology (Pain Medicine)
431 SUMMIT ST
ELGIN, IL 60120
Cook County (847) 289-8822
SCOTT NEWCOMB, DPM PC
Podiatrist
431 SUMMIT ST, SUITE 102
ELGIN, IL 60120
Cook County (847) 697-4500
DR. CHADI ISKANDAR YAACOUB M.D.
Anesthesiology
431 SUMMIT ST
ELGIN, IL 60120
Cook County (224) 535-7004
DR. BRUCE LEONARD MCLANE D.D.S.
Dentist
431 SUMMIT ST, SUITE #104
ELGIN, IL 60120
Cook County (847) 741-4347
SUMMITSURG PROCEDURE CENTER
Clinic/Center (Medical Specialty)
431 SUMMIT ST
ELGIN, IL 60120
Cook County (847) 289-5555

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 Karr's NPI number?

The NPI number for Gregory Karr is 1740351949. It was assigned to this individual provider in the NPPES registry on November 11, 2006.

Where is Gregory Karr located?

Gregory Karr practices at 431 Summit St Suite 105, Elgin, IL 60120. The listed phone number is (847) 742-6717.

What is Gregory Karr'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 Karr was last updated on July 26, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.