Individual
DR. JOHN MARK LEIB
Active
Sole proprietor
No
Provider details
NPI number
Gender
Man
Credential
D.M.D.
Contact information
Practice address
741 W STATE ST, SUITE 3, O FALLON, IL 62269-1971
(618) 628-1800
(618) 628-3406
Mailing address
741 W STATE ST, SUITE 3, O FALLON, IL 62269-1971
(618) 628-1800
(618) 628-3406
Taxonomy
Speciality
Code
Description
License number
State
122300000X
Dentist
Primary
—
IL
1223S0112X
Oral and Maxillofacial Surgery (Dentist)
—
IL
Other
Enumeration date
12/12/2006
Last updated
09/11/2025
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