Marc Fallah, MD
NPI 1750356804ActiveIndividual· Internal Medicine, Gastroenterology· Naperville, IL
Internal Medicine, Gastroenterology (MD) in Naperville, Illinois, trained at Tufts University School of Medicine (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $604,408 for 1,956 claims, against $106,555 paid for services in 2024. Gilead Sciences, Inc. was the largest of 8 companies reporting payments in 2025, $422.23 in all, mostly food and beverage.
Overview
| NPI | 1750356804 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 22, 2006 |
| Last updated in NPPES | Aug 7, 2023 |
| Certified by provider | Aug 7, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036108043 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 592 |
|---|---|
| Services billed | 1,697 across 62 procedure codes |
| Paid by Medicare | $106,555 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,956 · 3,688 30-day fills |
|---|---|
| Patients | 661 |
| Total drug cost | $604,408 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Tufts University School of Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Dupage Medical Group LtdWinfield, IL · 1,322 clinicians
Hospital affiliation
- Edward HospitalNaperville, IL
Industry payments (Open Payments)
- 2025$422.23 · 11 payments from 8 companies
- 2024$326.35 · 9 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $125.98 | 1 |
| Ipsen Biopharmaceuticals, Inc | $94.88 | 1 |
| Madrigal Pharmaceuticals | $48.25 | 2 |
| Abbvie Inc. | $45.34 | 2 |
| Janssen Biotech, Inc. | $43.45 | 2 |
What the 2025 payments were for
- Food and Beverage$422.23 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 24 gastroenterologists in Naperville · All gastroenterologists in Illinois