Mohamad Amer Mahayni, M.D.
NPI 1750465506ActiveIndividual· Internal Medicine, Cardiovascular Disease· Muskogee, OK
Internal Medicine, Cardiovascular Disease (M.D.) with Cherokee Nation, practicing in Muskogee, Oklahoma. Their prescriptions cost Medicare Part D more than their services did: $955,585 for 6,200 claims, against $381,774 paid for services in 2024. Boston Scientific Corporation was the largest of 9 companies reporting payments in 2025, $535.09 in all, mostly food and beverage. Lists Cherokee Nation W W Hastings Indian Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1750465506 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 25, 2006 |
| Last updated in NPPES | Jul 22, 2025 |
| Certified by provider | Jul 22, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 19349 | OK |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiovascular Disease (Cardiology) (OK); Practitioner - Cardiovascular Disease (Cardiology) (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 789 |
|---|---|
| Services billed | 6,541 across 58 procedure codes |
| Paid by Medicare | $381,774 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,200 · 15,902 30-day fills |
|---|---|
| Patients | 822 |
| Total drug cost | $955,585 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical group
- Cherokee NationTahlequah, OK · 449 clinicians
Hospital affiliations
- Cherokee Nation W W Hastings Indian HospitalTahlequah, OK
- Haskell Regional Hospital, IncStigler, OK
- Northeastern Health SystemTahlequah, OK
- Saint Francis Hospital MuskogeeMuskogee, OK
- Wagoner Community HospitalWagoner, OK
Industry payments (Open Payments)
- 2025$535.09 · 18 payments from 9 companies
- 2024$576.99 · 27 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $279.12 | 7 |
| Merck Sharp & Dohme LLC | $82.48 | 4 |
| Medtronic, Inc. | $42.29 | 1 |
| Novartis Pharmaceuticals Corporation | $25.91 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $24.87 | 1 |
What the 2025 payments were for
- Food and Beverage$535.09 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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