George Brian Gennaoui, D.O
NPI 1861928681ActiveIndividual· Internal Medicine, Rheumatology· Dearborn, MI
Internal Medicine, Rheumatology (D.O) in Dearborn, Michigan, trained at Michigan State University College of Osteopathic Medicine (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $594,313 for 2,700 claims, against $319,784 paid for services in 2024. Abbvie Inc. was the largest of 16 companies reporting payments in 2025, $794.43 in all, mostly food and beverage.
Overview
| NPI | 1861928681 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O |
| Sole proprietor | No |
| NPI issued | May 11, 2017 |
| Last updated in NPPES | Jul 31, 2026 |
| Certified by provider | Jul 31, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 5101027962 | MI |
| Internal Medicine, Rheumatology | 207RR0500X | 79972 | MN |
| Internal Medicine, Rheumatology | 207RR0500X | 02008468A | IN |
| Internal Medicine, Rheumatology | 207RR0500X | 34.015633 | OH |
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 - Rheumatology (DE); Practitioner - Rheumatology (IN); Practitioner - Rheumatology (LA); Practitioner - Rheumatology (MI); Practitioner - Rheumatology (MN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 263 |
|---|---|
| Services billed | 29,677 across 67 procedure codes |
| Paid by Medicare | $319,784 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,700 · 5,174 30-day fills |
|---|---|
| Patients | 582 |
| Total drug cost | $594,313 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | Michigan State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Rheumatology |
| Telehealth | Offers telehealth |
Medical groups
- Allina Health SystemNew Ulm, MN · 3,842 clinicians
- Christiana Care Health Services IncNewark, DE · 1,483 clinicians
- Beaumont Medical Group- Specialty ServicesBerkley, MI · 847 clinicians
- Perry County Memorial HospitalTell City, IN · 28 clinicians
Hospital affiliations
- Beaumont Hospital - DearbornDearborn, MI
- Beaumont Hospital - TaylorTaylor, MI
- Perry County Memorial HospitalTell City, IN
Industry payments (Open Payments)
- 2025$794.43 · 33 payments from 16 companies
- 2024$1,259 · 53 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $152.91 | 3 |
| Novartis Pharmaceuticals Corporation | $114.08 | 5 |
| Amgen Inc. | $91.42 | 5 |
| Astrazeneca Pharmaceuticals LP | $79.15 | 3 |
| Janssen Biotech, Inc. | $66.83 | 3 |
What the 2025 payments were for
- Food and Beverage$794.43 · 33 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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