Gregory S Grant, MD
Gregory S Grant is a Surgery Physician provider (Surgery) practicing in Naperville, IL, registered in the NPPES registry with NPI 1912973686 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1912973686 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Gregory S Grant |
| Credential | MD |
| Sex | Male |
| Practice address | 120 SPALDING DR, STE 100, Naperville, IL, 60540 |
| Phone | 6309610423 |
| Fax | 6309619280 |
| Enumeration date | 2006-02-23 |
| Last updated in NPPES | 2023-08-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208600000X | Surgery Physician | Primary | 036093207 | IL |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Copy-ready billing details
Provider: Gregory Grant, MD NPI: 1912973686 Taxonomy: 208600000X (Surgery Physician) Address: 120 SPALDING DR, STE 100, Naperville, IL, 60540
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1538166210 | David Schlieben | Individual | Nephrology Physician | Naperville, IL |
| 1720075849 | John Saran | Individual | Internal Medicine Physician | Naperville, IL |
| 1245227271 | Cathleen Cregier | Individual | Internal Medicine Physician | Naperville, IL |
| 1578551719 | Timothy Tyrrell | Individual | Internal Medicine Physician | Naperville, IL |
| 1629052089 | Mansoina Baweja | Individual | Hematology & Oncology Physician | Naperville, IL |
| 1043297971 | Joseph Kash | Individual | Hematology & Oncology Physician | Naperville, IL |
| 1588643399 | Elizabeth Devaney | Individual | Clinical Social Worker | Naperville, IL |
| 1184698425 | Louis Montana | Individual | Surgery Physician | Naperville, IL |
Verify this record
Cross-check NPI 1912973686 against the authoritative CMS record: view Gregory S Grant 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 2023-08-08.