Jennifer Hannan, M.D.
Obstetrics & Gynecology Physician · Downers Grove, IL
Jennifer Hannan, M.D. is an obstetrics & gynecology physician with a practice address in Downers Grove, Illinois, and NPI 1245496868, issued on Aug 3, 2008. Check the license (Illinois 036.123400, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Jennifer Hannan
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 036.123400 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3825 Highland Ave Ste 3K, Downers Grove, IL 60515
- Phone
- (630) 968-2144
- Enumerated
- Aug 3, 2008
- Record last updated
- May 1, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (630) 968-2337
- Medicare enrollment
- Enrolled (PECOS I20111101000403); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 2,062 in Illinois → Look up another NPI →
Verify Jennifer Hannan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036.123400Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
51 Medicare Part D claims for 21 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $59.97
3 payments; by number, the most common kind was food and beverage; the largest payer was CooperSurgical, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Tre Medical LtdDowners Grove, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer Hannan among 2,062 obstetrics & gynecology physician records in Illinois
Jennifer Hannan, M.D. is one of 2,062 obstetrics & gynecology physician records with a practice address in Illinois. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 53% of them.
- NPI issued2008 · 53% of these records are older, 43% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2006 · median 2006 among the 1,168 with a school on file
- Record last updated2020 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 obstetrics & gynecology physician records list a practice address in Downers Grove
They are 27 of the 1,899 NPPES records with a practice address in Downers Grove, and 2,062 obstetrics & gynecology physician records in Illinois.
All 2,062 in Illinois → Every provider in Downers Grove → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Naheed Akhter, MDDowners Grove, IL 605151861555179
- Shamita Bansore, MDDowners Grove, IL 605151700813771
- Radhika Chawla, M.D.Downers Grove, IL 605151790876803
- Amy Gaunt, MDDowners Grove, IL 605151063580801
- James Jenks, M.D.Downers Grove, IL 605151154435444
- Narmadha Kuppuswami, M.D.Downers Grove, IL 605151194720128
- Robert LawlerDowners Grove, IL 605151386758506
- Janell Mace, M.DDowners Grove, IL 605151659550408
Common questions
What is Jennifer Hannan, M.D.'s NPI number?
Jennifer Hannan, M.D.'s National Provider Identifier (NPI) is 1245496868, issued on Aug 3, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer Hannan, M.D. located?
The NPPES record lists a practice address at 3825 Highland Ave Ste 3K, Downers Grove, IL, 60515. Phone: (630) 968-2144. Providers update this record themselves, so call before visiting.
How can I verify Jennifer Hannan, M.D.'s license?
NPPES lists Illinois license number 036.123400, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jennifer Hannan, M.D. prescribe under Medicare Part D?
In 2024, Jennifer Hannan, M.D. had 51 Medicare Part D claims for 21 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.