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

Dr. Alejandra Maria O'Brien

Individual provider Emergency Medicine Physician · NPI 1619219805

Dr. Alejandra Maria O'Brien is an Emergency Medicine Physician in Chicago, Illinois. Licensed in Illinois and Indiana. Registered with an NPI since 2013.

Licensed in
IL, IN
In the registry since
2013
Specialties on file
2

Practice location Address checks out

1740 W Taylor St
Chicago, IL 60612-7232
Phone: (866) 600-2273
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 036.139005 (IL)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 01081747A (IN)

Record details

NPI number1619219805
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedMarch 26, 2013
Last updated in NPPESMarch 28, 2025
Certification dateMarch 28, 2025

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