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

Mrs. Erin Elizabeth O'Brien, APN

Individual provider Critical Care Neonatal Nurse Practitioner · NPI 1780988782

Mrs. Erin Elizabeth O'Brien, APN is a Critical Care Neonatal Nurse Practitioner in Chicago, Illinois. Licensed in Illinois. Registered with an NPI since 2011.

Licensed in
IL
In the registry since
2011
What do these letters mean?
APN — Advanced Practice Nurse
The umbrella title some states use for nurse practitioners and other advanced practice nurses.

See every abbreviation used in this directory →

Practice location Address checks out

250 E Superior St
Chicago, IL 60611-2914
Phone: (312) 472-1000
Show map & directions

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

Specialties & licences

Critical Care Neonatal Nurse Practitioner (primary) Taxonomy 363LN0005X · Licence 209008574 (IL)

Record details

NPI number1780988782
Entity typeIndividual (Type 1)
GenderFemale
Credentials APN
Sole proprietorNo
NPI enumeratedJanuary 5, 2011
Last updated in NPPESJanuary 5, 2011

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