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

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1578857835

CHI Yung Ahn, MD is a Geriatric Medicine (Internal Medicine) Physician in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2011.

Licensed in
IL
In the registry since
2011
Specialties on file
2
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

5140 N California Ave Ste 705
Chicago, IL 60625-3645
Phone: (773) 989-7554
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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 036138610 (IL)
Geriatric Medicine (Internal Medicine) Physician Taxonomy 207RG0300X · Licence 036138610 (IL)

Record details

NPI number1578857835
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 4, 2011
Last updated in NPPESOctober 30, 2020
Certification dateOctober 30, 2020
Mailing address2740 W Foster Ave, Ll7, Chicago, IL 60625-3500

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