Gillian M. Brennan
- Publications
- 6
- Medical groups
- 4
- Insurance carriers
- 11
- State licenses
- 3
- Year NPI issued
- 2008
- Practice address
- 120 Harvester Dr, Burr Ridge, IL 60527
- Practice phone
- Call (773) 702-9200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University of Chicago
Burr Ridge, Illinois
Find Gillian Brennan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Gillian M. Brennan is a neonatologist in Burr Ridge, Illinois
Gillian Brennan practices at University of Chicago in Burr Ridge, Illinois.
Gillian Brennan's NPI, 1174782437, was assigned on June 3, 2008. Gillian Brennan graduated from University College of Dublin National Univ SOM in 2004. Gillian Brennan holds Illinois license 036122278.
- NPI
- 1174782437NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961659057
- NPI enumeration date
- June 3, 2008
- NPI status
- Active
- Practice phone
- (773) 702-9200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Gillian M. Brennan practices at University of Chicago in Burr Ridge, Illinois
Gillian Brennan's primary practice is University of Chicago, at 120 Harvester Dr, Burr Ridge, IL 60527 in Dupage County. The practice phone is (773) 702-9200.
- University of Chicago120 Harvester Dr, Burr Ridge, IL 60527 · Dupage CountyPhone(773) 702-9200
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Gillian M. Brennan is affiliated with 1 site of care and 4 medical groups
Gillian Brennan's primary practice is University of Chicago in Burr Ridge, Illinois. The medical group on file is UChicago Medicine Physicians (University of Chicago Physicians Group). Dmand AI also links Gillian Brennan to 3 more medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Gillian M. Brennan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gillian Brennan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University of Chicago | Available with a free account |
| +3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Gillian M. Brennan is one of 273 neonatologists in Illinois
Neonatal-perinatal medicine is Gillian Brennan's primary specialty in the NPI Registry, under taxonomy code 2080N0001X. Gillian Brennan is board certified in neonatal-perinatal medicine by the American Board of Pediatrics. Dmand AI has Gillian Brennan's licenses on file in 3 states: Illinois, Guam and Connecticut.
Specialties and state licenses
- Neonatal-perinatal medicine, IllinoisPrimary
- Guam license
- Connecticut license
Neonatologists near Gillian Brennan
Counts of neonatologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Gillian M. Brennan's patients have a median age of 1
Across all payers, Dmand AI patient panel data puts Gillian Brennan's median patient age at 1, with 100% women.
Gillian Brennan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 1
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Gillian M. Brennan has 6 publications on record
Dmand AI links 6 papers to Gillian Brennan, published from 2019 to 2025. Gillian Brennan has published most often in Neoreviews. Gillian Brennan's most frequent co-authors are Vinod Havalad, MD, Nicole Kathryne Sather, MD and Mara Emily Dibartolomeo, DO, MPH.
Gillian Brennan's papers by year, 2019 to 2025
Gillian Brennan's most frequent co-authors
- Vinod Havalad, MD2 shared papers
- Nicole Kathryne Sather, MD2 shared papers
- Mara Emily Dibartolomeo, DO, MPH1 shared paper
Recent publications by Gillian Brennan
J Pediatr Pharmacol Ther
See who Gillian Brennan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Gillian Brennan works with, so you can find a warm path to the right neonatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Gillian M. Brennan graduated from University College of Dublin National Univ SOM
Gillian Brennan graduated from University College of Dublin National Univ SOM in 2004.
- Medical school
- Board certified in neonatal-perinatal medicine
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Gillian M. Brennan accepts plans from 11 insurance carriers
Gillian Brennan is in network with 11 carriers, including Elevance, HCSC and United Healthcare. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Elevance
- HCSC
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- Health Alliance
- Regence Health Plans
- Blue Cross and Blue Shield of Kansas City
- +3 more carriersWith a free account
Plan types Gillian Brennan accepts, by number of carriers
- PPO7
- Medicare5
- POS3
- EPO2
- HMO2
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Gillian M. Brennan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Gillian M. Brennan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gillian M. Brennan's NPI number?
Gillian M. Brennan's NPI number is 1174782437. It was assigned on June 3, 2008, and it is active in the NPI Registry.
What does Gillian M. Brennan specialize in?
Gillian M. Brennan is a neonatologist in Burr Ridge, Illinois. The primary specialty in the NPI Registry is Neonatal-Perinatal Medicine Physician (taxonomy code 2080N0001X).
Where does Gillian M. Brennan practice?
Gillian Brennan practices at 120 Harvester Dr, Burr Ridge, IL 60527. Gillian Brennan's primary practice is University of Chicago in Burr Ridge, Illinois. Dmand AI also links Gillian Brennan to 3 medical groups.
What is Gillian M. Brennan's office phone number?
The practice phone on file for Gillian Brennan is (773) 702-9200.
What is Gillian M. Brennan's medical license number?
Gillian Brennan holds Illinois license 036122278, one of the licenses on file in 3 states.
Which states has Gillian M. Brennan been licensed in?
Dmand AI has state licenses on file for Gillian Brennan in Illinois (2008 to 2026), Guam (since 2025) and Connecticut (2008 to 2009).
What medical group is Gillian M. Brennan part of?
Gillian Brennan is linked to UChicago Medicine Physicians (University of Chicago Physicians Group). Dmand AI links Gillian Brennan to 3 more medical groups.
Is Gillian M. Brennan board certified?
Yes. Gillian Brennan is board certified in neonatal-perinatal medicine by the American Board of Pediatrics.
Where did Gillian M. Brennan go to medical school?
Gillian Brennan graduated from University College of Dublin National Univ SOM in 2004.
How long has Gillian M. Brennan been practicing?
Gillian Brennan graduated from medical school in 2004, 22 years ago.
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Does Gillian M. Brennan do research?
Dmand AI links 6 publications to Gillian Brennan, published from 2019 to 2025.
Who does Gillian M. Brennan publish with?
Gillian Brennan's most frequent co-authors are Vinod Havalad, MD (2 shared papers), Nicole Kathryne Sather, MD (2 shared papers) and Mara Emily Dibartolomeo, DO, MPH (1 shared paper).
What insurance does Gillian M. Brennan accept?
Gillian Brennan is in network with 11 carriers, including Elevance, HCSC and United Healthcare. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
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