Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
DR. JOHN MARK LEIB, D.M.D.
ActiveDR. JOHN MARK LEIB, D.M.D. is a Dentist healthcare provider located in O FALLON, Illinois. NPI 1376604678 is currently active in the NPPES registry. Verify at CMS.
Dentist · O FALLON, IL
Registration Details
- NPI Number
- 1376604678
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- Dec 12, 2006 (19.680510804205 yrs)
- Last Updated
- Sep 11, 2025
Practice Information
- Address
-
741 W STATE STSUITE 3O FALLON, IL, 622691971Browse IL providers · Browse ZIP 62269
- Phone
- 6186281800
- Fax
- 6186283406
- Primary Specialty
-
Dentist
122300000X
- Additional Specialty
- Oral & Maxillofacial Surgery
Other Dentist Providers in O FALLON, IL
| Name | Credential | NPI |
|---|---|---|
| DR. DALE ALLEN SCHUTTE | D.D.S | 1659431500 |
| DR. GREGORY BIDDULPH | DMD | 1932237856 |
| DR. AMANDA LITTLEFIELD | DMD | 1821114497 |
| DR. SARAH MOJISOLA THOMPSON | D.M.D. | 1790904985 |
| DR. BRITTANY GILBRETH | D.M.D | 1285049825 |
| DR. BRIAN PAUL SNEATH | DMD | 1346733540 |
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.