A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).
Learn more about Dr. Brian O'Leary:
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- Currently 4 of 4 stars
The overall average patient rating of Dr. Brian O'Leary is Excellent.
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Specialties & Research
Dr. Brian O'Leary, MD is board certified in Internal Medicine.
- He has special expertise in 1 area:
- Flu (Human Influenza)
Education & Awards
Dr. O'Leary graduated from Northwestern University, Chicago. He has 5 awards.
Dr. O'Leary has 3 hospital affiliations:
- Advocate Good Samaritan Hospital
- Edward Hospital
- Advocate Hope Childrens Hospital
Accepted Insurance Plans
Dr. O'Leary accepts these health insurances in at least one office:
- Aetna - 2 plans
- United Healthcare - 2 plans
- Great-West Healthcare - 2 plans
- Blue Cross Blue Shield of Illinois - 2 plans
- Cigna - 2 plans
- Humana - 26 plans
- Blue Cross of Idaho - 2 plans
Similar doctors nearby
- Additional Information
- Where does Dr. Brian M. O'Leary practice?
Dr. Brian O'Leary practices Internal Medicine near Naperville, IL.
Additional practice locations include: Plainfield, IL.
See Naperville Internists.