Dr. Gregory Biddulph, DMD
Dr. Gregory Biddulph is a Dentist provider (Dentist) practicing in O Fallon, IL, registered in the NPPES registry with NPI 1932237856 since 2007. The credential DMD stands for Doctor of Medicine in Dentistry.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1932237856 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Gregory Biddulph |
| Credential | DMD |
| Sex | Male |
| Practice address | 1490 N GREEN MOUNT RD, SUITE B, O Fallon, IL, 62269 |
| Phone | 6186321603 |
| Fax | 6186326034 |
| Enumeration date | 2007-03-01 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 122300000X | Dentist | Primary | — | IL |
DMD — Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential
Copy-ready billing details
Provider: Gregory Biddulph, DMD NPI: 1932237856 Taxonomy: 122300000X (Dentist) Address: 1490 N GREEN MOUNT RD, SUITE B, O Fallon, IL, 62269
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1821114497 | Amanda Littlefield | Individual | Dentist | O Fallon, IL |
Verify this record
Cross-check NPI 1932237856 against the authoritative CMS record: view Dr. Gregory Biddulph 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.