Chaker H. Diab, DO
NPI 1477522381ActiveIndividual· Internal Medicine· Warren, MI
Internal Medicine (DO) in Warren, Michigan, trained at At Still University of Health Sciences, College of Osteo Med, Kirksville (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $726,126 for 6,411 claims, against $65,366 paid for services in 2024. Novo Nordisk Inc was the largest of 5 companies reporting payments in 2025, $181.43 in all, mostly food and beverage.
Overview
| NPI | 1477522381 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 14, 2006 |
| Last updated in NPPES | Apr 8, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | CD012050 | MI |
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 (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 122 |
|---|---|
| Services billed | 1,009 across 47 procedure codes |
| Paid by Medicare | $65,366 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,411 · 13,866 30-day fills |
|---|---|
| Patients | 307 |
| Total drug cost | $726,126 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | At Still University of Health Sciences, College of Osteo Med, Kirksville |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Internal Medicine |
Medical group
- Henry Ford Physician PartnersChesterfield, MI · 79 clinicians
Hospital affiliations
- Henry Ford Health HospitalDetroit, MI
- Henry Ford Macomb HospitalClinton Township, MI
- Henry Ford Health Warren HospitalWarren, MI
- McLaren MacombMount Clemens, MI
Industry payments (Open Payments)
- 2025$181.43 · 8 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $68.85 | 3 |
| Exact Sciences Corporation | $34.92 | 2 |
| Azurity Pharmaceuticals, Inc. | $29.37 | 1 |
| Alnylam Pharmaceuticals Inc. | $26.79 | 1 |
| Lilly USA, LLC | $21.50 | 1 |
What the 2025 payments were for
- Food and Beverage$181.43 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 135 internal medicine physicians in Warren · All internal medicine physicians in Michigan