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

Mary Kiyo Nielson

Individual provider Internal Medicine Physician · NPI 1750043360

Mary Kiyo Nielson is an Internal Medicine Physician in Chicago, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2021

Practice location Address checks out

251 E Huron St
Chicago, IL 60611-3055
Phone: (312) 926-2000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 125.085540 (IL)

Record details

NPI number1750043360
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedOctober 11, 2021
Last updated in NPPESJune 23, 2025
Certification dateJune 23, 2025

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