Mohamed Altattan, M.D.
NPI 1477932093ActiveIndividual· Internal Medicine, Rheumatology· Royal Oak, MI
Internal Medicine, Rheumatology (M.D.) with American Arthritis and Rheumatology Associates -Mi PLLC, practicing in Royal Oak, Michigan. Their prescriptions cost Medicare Part D more than their services did: $1,393,833 for 2,442 claims, against $737,051 paid for services in 2024. Janssen Biotech, Inc. was the largest of 19 companies reporting payments in 2025, $6,218 in all, mostly food and beverage. Lists Beaumont Hospital - Farmington Hills and 1 other hospital as hospital affiliations.
Overview
| NPI | 1477932093 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 28, 2015 |
| Last updated in NPPES | Feb 25, 2026 |
| Certified by provider | Feb 25, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 4301508147 | MI |
| Internal Medicine | 207R00000X | 35134136 | OH |
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); Practitioner - Internal Medicine (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 459 |
|---|---|
| Services billed | 62,941 across 39 procedure codes |
| Paid by Medicare | $737,051 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,442 · 3,888 30-day fills |
|---|---|
| Patients | 465 |
| Total drug cost | $1,393,833 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Rheumatology |
Medical group
- American Arthritis and Rheumatology Associates -Mi PLLCPort Huron, MI · 12 clinicians
Hospital affiliations
- Beaumont Hospital - Farmington HillsFarmington Hills, MI
- Beaumont Hospital Royal OakRoyal Oak, MI
Industry payments (Open Payments)
- 2025$6,218 · 226 payments from 19 companies
- 2024$4,418 · 184 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $2,160 | 19 |
| Amgen Inc. | $1,062 | 66 |
| Ucb, Inc. | $788.60 | 29 |
| Abbvie Inc. | $549.68 | 21 |
| E.R. Squibb & Sons, L.L.C. | $332.03 | 31 |
What the 2025 payments were for
- Food and Beverage$4,278 · 223 payments
- Consulting Fee$1,800 · 1 payment
- Education$139.94 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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