Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Matthew Leendert Kleinjan, MD, PHD

Individual provider Anatomic Pathology & Clinical Pathology Physician · NPI 1447949730

Matthew Leendert Kleinjan, MD, PHD is an Anatomic Pathology & Clinical Pathology Physician in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2023.

Licensed in
IL
In the registry since
2023
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

5841 S Maryland Ave M/c 3083
Chicago, IL 60637-1443
Phone: (773) 834-7644
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anatomic Pathology & Clinical Pathology Physician (primary) Taxonomy 207ZP0102X · Licence 125.081559 (IL)

Record details

NPI number1447949730
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedMay 3, 2023
Last updated in NPPESMay 3, 2023
Certification dateMay 3, 2023

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