Mary A. Horan, MD
Obstetrics & Gynecology Physician · Berwyn, IL
Mary A. Horan, MD is an obstetrics & gynecology physician with a practice address in Berwyn, Illinois, and NPI 1639252737, issued on Oct 23, 2006. Check the license (Illinois 036-084849, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mary A. Horan
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 036-084849 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3249 Oak Park Ave, Berwyn, IL 60402
- Phone
- (708) 783-9100
- Enumerated
- Oct 23, 2006
- Record last updated
- Apr 25, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (708) 783-0327
- Medicaid ID
- 036084849 IL
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 2,062 in Illinois → Look up another NPI →
Also registered at 3249 Oak Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary A. Horan 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 036-084849Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
28 Medicare Part D claims, 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.
Mary A. Horan among 2,062 obstetrics & gynecology physician records in Illinois
Mary A. Horan, MD 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 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2017 · 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).
Obstetrics & Gynecology Physician providers in Illinois
There are 2,062 obstetrics & gynecology physician records in Illinois.
All 2,062 in Illinois → Every provider in Berwyn → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- David Czukerberg, MDBerwyn, IL 604021578515839
- Funmilayo Macaulay, M.D.Berwyn, IL 604021356441844
- Patricia Naughton, MDBerwyn, IL 604021013940832
- Ramesh Seeras, M.D.Berwyn, IL 604021801902598
- Michelle Ventura, M.D.Berwyn, IL 604021245251859
- Randall Gordon, MDBlue Island, IL 604061174512925
- Alfonso Mejia-Zelaya, MDBlue Island, IL 604061558502245
- Angela Risser, MDBlue Island, IL 604061821052101
Common questions
What is Mary A. Horan, MD's NPI number?
Mary A. Horan, MD's National Provider Identifier (NPI) is 1639252737, issued on Oct 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary A. Horan, MD located?
The NPPES record lists a practice address at 3249 Oak Park Ave, Berwyn, IL, 60402. Phone: (708) 783-9100. Providers update this record themselves, so call before visiting.
How can I verify Mary A. Horan, MD's license?
NPPES lists Illinois license number 036-084849, 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 Mary A. Horan, MD prescribe under Medicare Part D?
In 2024, Mary A. Horan, MD had 28 Medicare Part D claims; 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.