Mohamed Marwan Nahhas, MD
NPI 1538119490ActiveIndividual· Internal Medicine· Palos Heights, IL
Internal Medicine (MD) in Palos Heights, Illinois, licensed in IL, with an NPI issued in May 2006. In 2024 Medicare paid $199,979 for 179 patients, and Part D covered 4,296 of their prescriptions, 85% of them generic. Janssen Biotech, Inc. was the largest of 11 companies reporting payments in 2025, $1,750 in all, mostly food and beverage. Lists Advocate Christ Hospital & Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1538119490 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 11, 2006 |
| Last updated in NPPES | May 21, 2020 |
| Certified by provider | May 21, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036075723 | 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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 179 |
|---|---|
| Services billed | 2,333 across 22 procedure codes |
| Paid by Medicare | $199,979 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,296 · 6,281 30-day fills |
|---|---|
| Patients | 207 |
| Total drug cost | $257,787 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1983 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliations
- Advocate Christ Hospital & Medical CenterOak Lawn, IL
- Advocate Trinity HospitalChicago, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Osf Little Company of Mary Medical CenterEvergreen Park, IL
- Palos Community HospitalPalos Heights, IL
Other facilities
- Atnt Home Health Care, IncHome health agency · Deerfield, IL
- Caress Home Health Care IncHome health agency · Skokie, IL
- Aliya of Palos ParkNursing home · Palos Park, IL
- Warren Barr Oak LawnNursing home · Oak Lawn, IL
Industry payments (Open Payments)
- 2025$1,750 · 16 payments from 11 companies
- 2024$1,389 · 16 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $403.30 | 3 |
| Abbvie Inc. | $212.09 | 2 |
| Novo Nordisk Inc | $204.37 | 2 |
| Actelion Pharmaceuticals US, Inc. | $145.74 | 1 |
| Madrigal Pharmaceuticals | $140.54 | 1 |
What the 2025 payments were for
- Food and Beverage$1,750 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 52 internal medicine physicians in Palos Heights · All internal medicine physicians in Illinois