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

Mr. John Kevin Base, MD

Individual provider Internal Medicine Physician · NPI 1881425650

Mr. John Kevin Base, MD is an Internal Medicine Physician in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2024.

Licensed in
IL
In the registry since
2024
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1950 W Polk St Fl 6
Chicago, IL 60612-3723
Phone: (312) 864-7311
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 125.084932 (IL)

Record details

NPI number1881425650
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 12, 2024
Last updated in NPPESApril 10, 2025
Certification dateApril 10, 2025
Mailing address1950 W Polk St Fl 6, Chicago, IL 60612-3723

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