Abdallah M. Rizk, MD
NPI 1689641664ActiveIndividual· Internal Medicine· Clarkston, MI
Internal Medicine (MD) with McLaren Medical Group, practicing in Clarkston, Michigan. Their prescriptions cost Medicare Part D more than their services did: $732,108 for 7,058 claims, against $73,593 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 2 companies reporting payments in 2025, $123.67 in all, mostly food and beverage. Lists McLaren Flint and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1689641664 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 8, 2006 |
| Last updated in NPPES | Aug 1, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 4301086821 | 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 | 162 |
|---|---|
| Services billed | 1,616 across 36 procedure codes |
| Paid by Medicare | $73,593 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,058 · 15,680 30-day fills |
|---|---|
| Patients | 415 |
| Total drug cost | $732,108 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1993 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- McLaren Medical GroupLansing, MI · 213 clinicians
Hospital affiliations
- McLaren FlintFlint, MI
- McLaren OaklandPontiac, MI
- Trinity Health Oakland HospitalPontiac, MI
Other facilities
- Custom Home HealthHome health agency · Troy, MI
Industry payments (Open Payments)
- 2025$123.67 · 6 payments from 2 companies
- 2024$164.31 · 9 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $107.47 | 5 |
| Novo Nordisk Inc | $16.20 | 1 |
What the 2025 payments were for
- Food and Beverage$123.67 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 30 internal medicine physicians in Clarkston · All internal medicine physicians in Michigan