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

Individual provider Obstetrics & Gynecology Physician · NPI 1245496868

Jennifer Hannan, MD is an Obstetrics/Gynecology in Downers Grove, Illinois. Qualified in 2006, 20 years ago. Practices with Tre Medical Ltd, a 4-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
20
Licensed in
IL
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3825 Highland Ave Ste 3K
Downers Grove, IL 60515-1589
Phone: (630) 968-2144
Fax: (630) 968-2337
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 036.123400 (IL)

Record details

NPI number1245496868
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 3, 2008
Last updated in NPPESMay 1, 2020
Certification dateMay 1, 2020

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolOTHER
Graduated 2006 (20 years in practice)
Group practice Tre Medical Ltd — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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