Provider Profile
Gillian Brennan
Unclaimed ProfileAbout Gillian Brennan
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Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (888) 824-0200
- Email not available
Practice Locations
5841 S MARYLAND AVE
Chicago, IL 60637
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other pediatric neonatals at this location 1
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other pediatric neonatals in Chicago 7
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2004 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Gillian Brennan?
Gillian Brennan is a pediatric neonatal in Chicago, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Pediatric Neonatal-Perinatal Medicine”.
NPI registry
What is Gillian Brennan's address?
Gillian Brennan is listed at 5841 S Maryland Ave, Chicago, IL 60637. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Gillian Brennan?
The number on file is (888) 824-0200. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Gillian Brennan?
Gillian Brennan's National Provider Identifier is 1174782437. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Gillian Brennan train?
Gillian Brennan attended Other, graduating in 2004. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Gillian Brennan have?
Gillian Brennan has 22 years experience. Calculated from a graduation year of 2004, reported in the CMS National Downloadable File.
CMS public data
Is Gillian Brennan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Gillian Brennan. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.