Amer Alsamman, MD
NPI 1558701540ActiveIndividual· Internal Medicine, Gastroenterology· Olympia Fields, IL
Internal Medicine, Gastroenterology (MD) with Prime Healthcare Illinois Medical Group LLC and 1 other group, practicing in Olympia Fields, Illinois. In 2024 Medicare paid $45,199 for 245 patients, and Part D covered 297 of their prescriptions, 86% of them generic. Olympus Corporation of the Americas was the largest of 17 companies reporting payments in 2025, $2,991 in all, mostly food and beverage. Lists Franciscan Health Olympia & Chicago Heights as a hospital affiliation.
Overview
| NPI | 1558701540 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 5, 2013 |
| Last updated in NPPES | Jul 18, 2024 |
| Certified by provider | Jul 18, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036169376 | IL |
| Internal Medicine, Gastroenterology | 207RG0100X | 184601 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 245 |
|---|---|
| Services billed | 461 across 46 procedure codes |
| Paid by Medicare | $45,199 |
Part D prescriptions in 2024
| Prescriptions (claims) | 297 · 382 30-day fills |
|---|---|
| Patients | 179 |
| Total drug cost | $21,218 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical groups
- Prime Healthcare Illinois Medical Group LLCChicago, IL · 322 clinicians
- Specialty Physicians of Illinois LLCOlympia Fields, IL · 102 clinicians
Hospital affiliation
- Franciscan Health Olympia & Chicago HeightsOlympia Fields, IL
Industry payments (Open Payments)
- 2025$2,991 · 95 payments from 17 companies
- 2024$3,396 · 33 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Olympus Corporation of the Americas | $1,114 | 11 |
| Janssen Biotech, Inc. | $262.55 | 14 |
| Abbvie Inc. | $234.24 | 19 |
| Phathom Pharmaceuticals, Inc. | $209.52 | 3 |
| Boston Scientific Corporation | $184.33 | 2 |
What the 2025 payments were for
- Food and Beverage$1,847 · 86 payments
- Travel and Lodging$1,059 · 8 payments
- Education$84.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in Olympia Fields
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All Internal Medicine, Gastroenterology providers in Illinois →