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

Individual provider Internal Medicine Physician · NPI 1356374383

Dr. Mark C Chien, MD is an Internal Medicine Physician in Chicago, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2006
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

680 N Lake Shore Dr Ste 118
Chicago, IL 60611-4546
Phone: (312) 503-6000
Fax: (312) 503-6329
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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 (IL)

Record details

NPI number1356374383
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 10, 2006
Last updated in NPPESJuly 8, 2007

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