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

Colleen Mary O'Leary, RN, AOCNS

Individual provider Oncology Registered Nurse · NPI 1457658973

Colleen Mary O'Leary, RN, AOCNS is an Oncology Registered Nurse in Villa Park, Illinois. Licensed in Illinois. Registered with an NPI since 2011.

Licensed in
IL
In the registry since
2011
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Practice location Address checks out

25 S Euclid Ave
Villa Park, IL 60181-2625
Phone: (773) 965-4727
Show map & directions

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

Specialties & licences

Oncology Registered Nurse (primary) Taxonomy 163WX0200X · Licence 041317602 (IL)

Record details

NPI number1457658973
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN , AOCNS
Sole proprietorNo
NPI enumeratedFebruary 18, 2011
Last updated in NPPESFebruary 18, 2011