Margaret M. Pfister, MD
Obstetrics & Gynecology Physician · Hinsdale, IL
Margaret M. Pfister, MD is an obstetrics & gynecology physician with a practice address in Hinsdale, Illinois, and NPI 1518909779, issued on Jun 12, 2006. Check the license (Illinois 036058934, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Margaret M. Pfister
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 036058934 IL
Self-reported in NPPES; status is on the state search - Practice location
- 911 N Elm St, Hinsdale, IL 60521
- Phone
- (630) 734-2634
- Enumerated
- Jun 12, 2006
- Record last updated
- Nov 30, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (630) 734-2635
- Medicaid ID
- 036058934 IL
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 2,062 in Illinois → Look up another NPI →
Also registered at 911 N Elm St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Margaret M. Pfister 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 036058934Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
20 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.
Margaret M. Pfister among 2,062 obstetrics & gynecology physician records in Illinois
Margaret M. Pfister, 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 updated2011 · 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 Hinsdale → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Michael Bercek, MDHinsdale, IL 605211083728851
- Elaine Cheng, MDHinsdale, IL 605211891885778
- Pamela Dorne, M.D.Hinsdale, IL 605211265512693
- Carol Gilles, MDHinsdale, IL 605211942382387
- Dwight Kett, MDHinsdale, IL 605211205940988
- Karenmarie Meyer, M.D.Hinsdale, IL 605211003811035
- Kimberly Napolitano, MDHinsdale, IL 605211699889386
- Megan Sax, M.D.Hinsdale, IL 605211780117713
Common questions
What is Margaret M. Pfister, MD's NPI number?
Margaret M. Pfister, MD's National Provider Identifier (NPI) is 1518909779, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Margaret M. Pfister, MD located?
The NPPES record lists a practice address at 911 N Elm St, Hinsdale, IL, 60521. Phone: (630) 734-2634. Providers update this record themselves, so call before visiting.
How can I verify Margaret M. Pfister, MD's license?
NPPES lists Illinois license number 036058934, 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 Margaret M. Pfister, MD prescribe under Medicare Part D?
In 2024, Margaret M. Pfister, MD had 20 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.