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

Mrs. Mary Ann Shannon, RDLD

Individual provider Registered Dietitian · NPI 1245619493

Mrs. Mary Ann Shannon, RDLD is a Registered Dietitian in Darien, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2015
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Practice location Address checks out

1801 Holly Ave
Darien, IL 60561-3516 Not confirmed with CMS for 11 years — call before visiting
Phone: (630) 347-0526
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 443568 (IL)

Record details

NPI number1245619493
Entity typeIndividual (Type 1)
GenderFemale
Credentials RDLD
Sole proprietorYes
NPI enumeratedMay 20, 2015
Last updated in NPPESMay 20, 2015

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients357
Services billed 2,828 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Other providers in Darien