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

Gillian Brennan

Individual provider Neonatal-Perinatal Medicine Physician · NPI 1174782437

Gillian Brennan is an Undefined Physician Type (Specify) in Chicago, Illinois. Qualified in 2004, 22 years ago. Licensed in Illinois.

Years since qualifying
22
Licensed in
IL
In the registry since
2008
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Practice location Address checks out

5841 S Maryland Ave
Chicago, IL 60637-1443
Phone: (888) 824-0200
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neonatal-Perinatal Medicine Physician (primary) Taxonomy 2080N0001X · Licence 036122278 (IL)

Record details

NPI number1174782437
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedJune 3, 2008
Last updated in NPPESOctober 24, 2022
Mailing address150 Harvester Dr, Suite 300, Burr Ridge, IL 60527-5919

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyUNDEFINED PHYSICIAN TYPE (SPECIFY)
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Accepts Medicare assignment Not indicated

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