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

Dr. Ann Kathleen O'Neill, RD, MD

Individual provider Registered Dietitian · NPI 1659796381

Dr. Ann Kathleen O'Neill, RD, MD is a Registered Dietitian in Maywood, Illinois. Works from 2 locations. Licensed in Illinois.

Licensed in
IL
In the registry since
2014
Specialties on file
3
What do these letters mean?
RD — Registered Dietitian
A credentialed nutrition professional.
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2160 S 1st Ave
Maywood, IL 60153-3328
Phone: (888) 584-7888
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 38731 Mound Rd, Sterling Heights, MI 48310-3210 — (586) 939-8480

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 125.080877 (IL)
Registered Dietitian Taxonomy 133V00000X
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1659796381
Entity typeIndividual (Type 1)
GenderFemale
Credentials RD , MD
Sole proprietorNo
NPI enumeratedMarch 4, 2014
Last updated in NPPESJune 16, 2022
Certification dateJune 16, 2022

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