Ali Ahmed Karrar, M.D.
NPI 1871520239ActiveIndividual· Internal Medicine, Rheumatology· Grand Blanc, MI
Internal Medicine, Rheumatology (M.D.) with Rau Physical Therapy Inc and 2 other groups, practicing in Grand Blanc, Michigan. Their prescriptions cost Medicare Part D more than their services did: $4,111,180 for 3,715 claims, against $202,038 paid for services in 2024. Takeda Pharmaceuticals U.S.A., Inc. was the largest of 24 companies reporting payments in 2025, $4,682 in all, mostly food and beverage. Lists Covenant Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1871520239 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 28, 2006 |
| Last updated in NPPES | Apr 8, 2021 |
| Certified by provider | Apr 8, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | AK067638 | MI |
| Internal Medicine, Rheumatology | 207RR0500X | 4301067638 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Rheumatology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 279 |
|---|---|
| Services billed | 12,581 across 42 procedure codes |
| Paid by Medicare | $202,038 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,715 · 6,883 30-day fills |
|---|---|
| Patients | 742 |
| Total drug cost | $4,111,180 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1980 |
|---|---|
| Medicare specialty | Rheumatology |
| Telehealth | Offers telehealth |
Medical groups
- Rau Physical Therapy IncFrankenmuth, MI · 96 clinicians
- Great Lakes Bay Health CentersBay City, MI · 86 clinicians
- Michigan Rheumatology Group PCGrand Blanc, MI · 3 clinicians
Hospital affiliations
- Covenant Medical CenterSaginaw, MI
- McLaren Bay RegionBay City, MI
- McLaren Lapeer RegionLapeer, MI
Industry payments (Open Payments)
- 2025$4,682 · 189 payments from 24 companies
- 2024$5,391 · 175 payments from 28 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $1,101 | 10 |
| Amgen Inc. | $719.41 | 51 |
| Janssen Biotech, Inc. | $673.40 | 24 |
| Abbvie Inc. | $671.23 | 29 |
| Novartis Pharmaceuticals Corporation | $361.18 | 21 |
What the 2025 payments were for
- Food and Beverage$3,707 · 184 payments
- Travel and Lodging$775.95 · 3 payments
- Education$198.99 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Rheumatology providers in Grand Blanc
- 1689746901
- 1982652103