Dr. Gregory Michael Karr, DDS
Dr. Gregory Michael Karr is a Dentist provider (Dentist) practicing in Elgin, IL, registered in the NPPES registry with NPI 1740351949 since 2006. The credential DDS stands for Doctor of Dental Surgery.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1740351949 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Gregory Michael Karr |
| Credential | DDS |
| Sex | Male |
| Practice address | Elgin, IL, 60120 |
| Phone | 8477426717 |
| Fax | 8477423951 |
| Enumeration date | 2006-11-11 |
| Last updated in NPPES | 2007-07-08 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 122300000X | Dentist | Primary | 01919004 | IL |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: Gregory Karr, DDS NPI: 1740351949 Taxonomy: 122300000X (Dentist) Address: Elgin, IL, 60120
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1992706261 | Scott Newcomb | Individual | Foot & Ankle Surgery Podiatrist | Elgin, IL |
| 1750308516 | Scott Newcomb, Dpm PC | Organization | Podiatrist | Elgin, IL |
| 1851313092 | Bruce Mclane | Individual | Dentist | Elgin, IL |
| 1962416370 | John Prunskis | Individual | Interventional Pain Medicine Physician | Elgin, IL |
| 1881757250 | Summitsurg Procedure Center | Organization | Medical Specialty Clinic/Center | Elgin, IL |
| 1760690028 | Chadi Yaacoub | Individual | Anesthesiology Physician | Elgin, IL |
| 1326205808 | Anthony Lebario | Individual | Pain Medicine (Physical Medicine & Rehabilitation) Physician | Elgin, IL |
| 1568605806 | Hadi Moten | Individual | Pain Medicine (Anesthesiology) Physician | Elgin, IL |
Verify this record
Cross-check NPI 1740351949 against the authoritative CMS record: view Dr. Gregory Michael Karr on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.