Mahmoud Hassan Aly, M.D.
NPI 1699791459ActiveIndividual· Internal Medicine, Hematology & Oncology· Staten Island, NY
Internal Medicine, Hematology & Oncology (M.D.) with Icahn School of Medicine at Mount Sinai, practicing in Staten Island, New York. Their prescriptions cost Medicare Part D more than their services did: $2,170,037 for 721 claims, against $86,311 paid for services in 2024. Pfizer Inc. was the largest of 2 companies reporting payments in 2025, $30.70 in all, mostly education. Lists Mount Sinai Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1699791459 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 14, 2006 |
| Last updated in NPPES | Nov 14, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 185995-1 | NY |
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 (NJ); Practitioner - Hematology/Oncology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 453 |
|---|---|
| Services billed | 1,203 across 10 procedure codes |
| Paid by Medicare | $86,311 |
Part D prescriptions in 2024
| Prescriptions (claims) | 721 · 1,328 30-day fills |
|---|---|
| Patients | 162 |
| Total drug cost | $2,170,037 |
| Generic share | 69% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
Medical group
- Icahn School of Medicine at Mount SinaiStaten Island, NY · 33 clinicians
Hospital affiliations
- Mount Sinai HospitalNew York, NY
- Staten Island University HospitalStaten Island, NY
Industry payments (Open Payments)
- 2025$30.70 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $16.00 | 1 |
| Recordati_rare_diseases_inc. | $14.70 | 1 |
What the 2025 payments were for
- Education$16.00 · 1 payment
- Food and Beverage$14.70 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 33 hematologist-oncologists in Staten Island · All hematologist-oncologists in New York