NPPES file of Aug 9, 2026

Stavros Alexandros Petros Doumas, MD

Gastroenterology Physician · Chicago, IL

Stavros Alexandros Petros Doumas, MD is a gastroenterology physician with a practice address in Chicago, Illinois, and NPI 1396312682, issued on Jun 7, 2021. Check the license (Illinois 125.085136, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1396312682
Name
Stavros Alexandros Petros Doumas
Credential
MD
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
125.085136 IL
Self-reported in NPPES; status is on the state search
Practice location
676 N Saint Clair St Ste 1400, Chicago, IL 60611
Phone
(312) 695-5398
Enumerated
Jun 7, 2021
Record last updated
Jul 1, 2025
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 676 N Saint Clair St Ste 1400

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Maciej Bielaczyc, LCSWClinical Social Worker1275169732
  2. Justin Boike, MDHepatology Physician1497014294
  3. Marinos KontzialisDiagnostic Neuroimaging (Radiology) Physician1528214855
  4. Chase Krumpelman, M.D., PH.D.Diagnostic Radiology Physician1548528847
  5. Ronak Patel, M.D.Gastroenterology Physician1780022897
  6. David Shapiro, MDGastroenterology Physician1548204035

Verify Stavros Alexandros Petros Doumas in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 125.085136
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

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76% fewer Medicare Part D claims than the average gastroenterology physician in 2024

196 Medicare Part D claims for 48 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.

  1. Stavros Doumas196
  2. Specialty average811

Most prescribed

  1. Atorvastatin Calcium13 claims
  2. Levothyroxine Sodium13 claims
  3. Metformin Hcl12 claims
  4. Hydrochlorothiazide11 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.

Stavros Alexandros Petros Doumas among 887 gastroenterology physician records in Illinois

Stavros Alexandros Petros Doumas, 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 2021, is newer than 95% of them.

  • NPI issued2021 · 95% of these records are older, 4% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileNo · 72% of these records are
  • Record last updated2025 · 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.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Greg Cohen, M.D.Chicago, IL 606111669447348
  2. Maria Ferreira, MDChicago, IL 606111194755421
  3. Robin Fintel, M.D.Chicago, IL 606111023083250
  4. Steven Flamm, MDChicago, IL 606111912937244
  5. Melvin Goldstein, M.D.Chicago, IL 606111376531400
  6. Nirmala Gonsalves, MDChicago, IL 606111326038712
  7. Richard Green, MDChicago, IL 606111770511404
  8. Joseph Karacic, MDChicago, IL 606111992798417

Common questions

What is Stavros Alexandros Petros Doumas, MD's NPI number?

Stavros Alexandros Petros Doumas, MD's National Provider Identifier (NPI) is 1396312682, issued on Jun 7, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Stavros Alexandros Petros Doumas, MD located?

The NPPES record lists a practice address at 676 N Saint Clair St Ste 1400, Chicago, IL, 60611. Phone: (312) 695-5398. Providers update this record themselves, so call before visiting.

How can I verify Stavros Alexandros Petros Doumas, MD's license?

NPPES lists Illinois license number 125.085136, 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 Stavros Alexandros Petros Doumas, MD prescribe under Medicare Part D?

In 2024, Stavros Alexandros Petros Doumas, MD had 196 Medicare Part D claims for 48 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.