Marc Fallah, MD
Gastroenterology Physician · Naperville, IL
Marc Fallah, MD is a gastroenterology physician with a practice address in Naperville, Illinois, and NPI 1750356804, issued on Feb 22, 2006. Check the license (Illinois 036108043, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Marc Fallah
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 036108043 IL
Self-reported in NPPES; status is on the state search - Practice location
- 100 Spalding Dr, Naperville, IL 60540
- Phone
- (630) 717-2600
- Enumerated
- Feb 22, 2006
- Record last updated
- Aug 7, 2023
- Medicare enrollment
- Enrolled (PECOS I20040223000548); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1994
- Entity
- Type 1 · individual
Also registered at 100 Spalding Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rafi Ali, M.D.Gastroenterology Physician1437136454
- Fariborze Barhamand, MDHematology & Oncology Physician1093810491
- Sharon Cline, M.D.Cardiovascular Disease Physician1588750327
- Michael Coffel, FNP-BCFamily Nurse Practitioner1275795866
- Mark Daniels, M.D.Gastroenterology Physician1043215718
Verify Marc Fallah 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 036108043Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average gastroenterology physician in 2024
1,956 Medicare Part D claims for 661 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Pantoprazole Sodium224 claims
- Ursodiol195 claims
- Peg 3350-Electrolyte184 claims
- Omeprazole142 claims
- Azathioprine126 claims
- Famotidine92 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.
Industry payments in 2024: $326.35
9 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Dupage Medical Group LtdNaperville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gastroenterology Physician providers in Illinois
There are 887 gastroenterology physician records in Illinois.
Other gastroenterology physician records in Illinois
- Abdul Aadam, M.D.Chicago, IL1013038744
- Richard Aaronson, M.D.Olympia Fields, IL1578520656
- Abdelhai Abdelqader, MDMaywood, IL1073931127
- Mustafa Abdul-Hussein, MDMattoon, IL1972759173
- Abdullah AbdussalamDes Plaines, IL1932442613
- Ayokunle Abegunde, M.D.Maywood, IL1194031435
- Majd Aboona, MDChicago, IL1386347789
- James Abraham, MDNaperville, IL1427276732
- Rana Abraham, M.D., M.S.Chicago, IL1437318516
- Frida Abrahamian, MDChicago, IL1447274279
Common questions
What is Marc Fallah, MD's NPI number?
Marc Fallah, MD's National Provider Identifier (NPI) is 1750356804, issued on Feb 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marc Fallah, MD located?
The NPPES record lists a practice address at 100 Spalding Dr, Naperville, IL, 60540. Phone: (630) 717-2600. Providers update this record themselves, so call before visiting.
How can I verify Marc Fallah, MD's license?
NPPES lists Illinois license number 036108043, 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 Marc Fallah, MD prescribe under Medicare Part D?
In 2024, Marc Fallah, MD had 1,956 Medicare Part D claims for 661 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.