Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. John P Leonard, DMD

Individual provider Dentist · NPI 1447444641

Dr. John P Leonard, DMD is a Dentist in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2007.

Licensed in
IL
In the registry since
2007
What do these letters mean?
DMD — Doctor of Dental Medicine
A dentist. Identical training and licensing to a DDS.

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Practice location Address checks out

326 S Marshfield Ave
Chicago, IL 60612-3212
Phone: (312) 942-0200
Fax: (312) 666-4640
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dentist (primary) Taxonomy 122300000X (IL)

Record details

NPI number1447444641
Entity typeIndividual (Type 1)
GenderMale
Credentials DMD
Sole proprietorNo
NPI enumeratedAugust 30, 2007
Last updated in NPPESAugust 30, 2007
Mailing address326 S Marshfield Ave, Chicago, IL 60612-3212

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