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

Mrs. Mary Ann Duff, RDN, LDN

Individual provider Registered Dietitian · NPI 1902526601

Mrs. Mary Ann Duff, RDN, LDN is a Registered Dietitian in Springfield, Missouri. Works from 2 locations. Licensed in Missouri.

Licensed in
MO
In the registry since
2022
What do these letters mean?
RDN — Registered Dietitian Nutritionist
The current title for a registered dietitian.
LDN — Licensed Dietitian Nutritionist
A state-licensed dietitian nutritionist.

See every abbreviation used in this directory →

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Practice location Partly verified

Some contact details are missing from the federal record.

Ozarks Dialysis Services 3525 S National Ave Ste 108
Springfield, MO 65807
Phone: (417) 269-8736
Fax: (417) 269-3471
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • Cox Health, Springfield, MO 65807 — (417) 269-6000

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 2000175375 (MO)

Record details

NPI number1902526601
Entity typeIndividual (Type 1)
GenderFemale
Credentials RDN , LDN
Sole proprietorNo
NPI enumeratedSeptember 1, 2022
Last updated in NPPESSeptember 1, 2022
Certification dateAugust 30, 2022

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