Doctor profile · Federal record

Dr. Jennifer Hannan, M.D.

Obstetrics & Gynecology Physician (CMS: Obstetrics/Gynecology) · Downers Grove, IL

  • NPI 1245496868
  • Accepts Medicare
  • 20 yrs in practice
  • Female
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
3825 Highland Ave Ste 3K
Downers Grove, IL 605151589
(630) 968-2144
fax (630) 968-2337

Credentials & registration

NPPES · NUCC
NPI registered
August 2008 — 18 yrs on file
Profile last updated
May 1, 2020
Year of graduation
2006 — 20 yrs since
Specialty taxonomy
207V00000X — NUCC code
State license (1)
Illinois #036.123400

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1245496868. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$60
Transactions
3
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
CooperSurgical, INC. 2 $37.93
Pfizer INC. 1 $22.04

By nature of payment

Food and Beverage
$60

Frequently asked questions

Auto-generated from federal data
What is Dr. Jennifer Hannan's medical specialty?
Dr. Jennifer Hannan practices Obstetrics & Gynecology Physician in Downers Grove, IL.
Where does Dr. Jennifer Hannan practice?
Dr. Jennifer Hannan practices at 3825 Highland Ave Ste 3K, Downers Grove, IL 605151589. Office phone: 6309682144.
What is Dr. Jennifer Hannan's NPI?
Dr. Jennifer Hannan's National Provider Identifier (NPI) is 1245496868, issued by NPPES.
Does Dr. Jennifer Hannan accept Medicare assignment?
Yes. Dr. Jennifer Hannan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.