Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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MS. Mary M Niewinski, MS, RD, LDN

Individual provider Pediatric Nutrition Registered Dietitian · NPI 1366678153

MS. Mary M Niewinski, MS, RD, LDN is a Pediatric Nutrition Registered Dietitian in Chicago, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2009
Specialties on file
2
What do these letters mean?
MS — Master of Science
A graduate science degree.
RD — Registered Dietitian
A credentialed nutrition professional.
LDN — Licensed Dietitian Nutritionist
A state-licensed dietitian nutritionist.

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Practice location Address checks out

5424 N Nashville Ave
Chicago, IL 60656-2209
Phone: (773) 456-4201
Fax: (312) 355-0739
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Nutrition Registered Dietitian (primary) Taxonomy 133VN1004X (IL)
Metabolic Nutrition Registered Dietitian Taxonomy 133VN1006X (IL)

Record details

NPI number1366678153
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , RD , LDN
Sole proprietorYes
NPI enumeratedJune 7, 2009
Last updated in NPPESJune 7, 2009

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