Mary Biglin, MD
Gastroenterology Physician · Chicago, IL
Mary Biglin, MD is a gastroenterology physician with a practice address in Chicago, Illinois, and NPI 1053840991, issued on Jun 5, 2017. Check the license (Illinois 036-152809, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mary Biglin
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 036-152809 IL
125070824 IL
Self-reported in NPPES; status is on the state search - Practice location
- 840 S Wood St, Chicago, IL 60612
- Phone
- (312) 996-6651
- Enumerated
- Jun 5, 2017
- Record last updated
- Jul 7, 2023
- Medicare enrollment
- Enrolled (PECOS I20240116002659); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 2017
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 887 in Illinois → Look up another NPI →
Also registered at 840 S Wood St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Frederick Behm, MDAnatomic Pathology & Clinical Pathology Physician1457354656
- Redouane Boumendjel, MDAnatomic Pathology & Clinical Pathology Physician1730349028
- Stephanie BrowneStudent in an Organized Health Care Education/Training Program1427997154
Verify Mary Biglin 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 036-152809Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average gastroenterology physician in 2024
226 Medicare Part D claims for 111 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Omeprazole70 claims
- Gavilyte-G41 claims
- Pantoprazole Sodium13 claims
- Sod Sulf-Potass Sulf-Mag Sulf11 claims
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.
Bills Medicare through one group practice
- Rush University Medical GroupChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Biglin among 887 gastroenterology physician records in Illinois
Mary Biglin, MD is one of 887 gastroenterology physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 82% of them.
- NPI issued2017 · 82% of these records are older, 14% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2017 · median 2003 among the 643 with a school on file
- Record last updated2023 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Illinois
There are 887 gastroenterology physician records in Illinois.
All 887 in Illinois → Every provider in Chicago → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Frida Abrahamian, MDChicago, IL 606121447274279
- Purnima Balachandran, MDChicago, IL 606121659318509
- Michael Brown, M.D.Chicago, IL 606121265477293
- Keith Bruninga, M.D.Chicago, IL 606121881638823
- Mark Demeo, M.D.Chicago, IL 606121972549327
- Mohammad Fayyaz, MDChicago, IL 606121992731616
- Benjamin Go, M.D.Chicago, IL 606121982624946
- Ali Keshavarzian, M.D.Chicago, IL 606121558302257
Common questions
What is Mary Biglin, MD's NPI number?
Mary Biglin, MD's National Provider Identifier (NPI) is 1053840991, issued on Jun 5, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Mary Biglin, MD located?
The NPPES record lists a practice address at 840 S Wood St, Chicago, IL, 60612. Phone: (312) 996-6651. Providers update this record themselves, so call before visiting.
How can I verify Mary Biglin, MD's license?
NPPES lists Illinois license number 036-152809, 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 Biglin, MD prescribe under Medicare Part D?
In 2024, Mary Biglin, MD had 226 Medicare Part D claims for 111 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.