Mohamad Fatin Atassi, MD
NPI 1073508172ActiveIndividual· Internal Medicine, Cardiovascular Disease· Chicago, IL
Internal Medicine, Cardiovascular Disease (MD) with Advocate Health and Hospitals Corporation, practicing in Chicago, Illinois. Their prescriptions cost Medicare Part D more than their services did: $494,958 for 4,340 claims, against $75,795 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. was the largest of 9 companies reporting payments in 2025, $416.36 in all, mostly food and beverage. Lists Advocate Christ Hospital & Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1073508172 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 14, 2005 |
| Last updated in NPPES | Dec 10, 2021 |
| Certified by provider | Dec 10, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 036062020 | 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 - Cardiovascular Disease (Cardiology) (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 320 |
|---|---|
| Services billed | 1,073 across 30 procedure codes |
| Paid by Medicare | $75,795 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,340 · 10,603 30-day fills |
|---|---|
| Patients | 573 |
| Total drug cost | $494,958 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1977 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical group
- Advocate Health and Hospitals CorporationChicago, IL · 3,118 clinicians
Hospital affiliations
- Advocate Christ Hospital & Medical CenterOak Lawn, IL
- Advocate Trinity HospitalChicago, IL
Industry payments (Open Payments)
- 2025$416.36 · 22 payments from 9 companies
- 2024$409.11 · 20 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $157.02 | 8 |
| Novo Nordisk Inc | $65.51 | 3 |
| Esperion Therapeutics, Inc. | $39.55 | 2 |
| Merck Sharp & Dohme LLC | $33.53 | 2 |
| Astrazeneca Pharmaceuticals LP | $31.73 | 2 |
What the 2025 payments were for
- Food and Beverage$416.36 · 22 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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