Syed Aslam Zahir, M.D.
NPI 1538156732ActiveIndividual· Internal Medicine, Hematology & Oncology· Elgin, IL
Internal Medicine, Hematology & Oncology (M.D.) with Illinois Cancer Specialists, practicing in Elgin, Illinois. In 2024 Medicare paid $6,257,134 for 653 patients, and Part D covered 2,536 of their prescriptions, 78% of them generic. Novartis Pharmaceuticals Corporation was the largest of 25 companies reporting payments in 2025, $2,514 in all, mostly food and beverage. Lists Advocate Sherman Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1538156732 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 3, 2005 |
| Last updated in NPPES | Jan 5, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 036082161 | IL |
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 - Hematology/Oncology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 653 |
|---|---|
| Services billed | 363,418 across 180 procedure codes |
| Paid by Medicare | $6,257,134 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,536 · 3,859 30-day fills |
|---|---|
| Patients | 345 |
| Total drug cost | $4,531,944 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Hematology |
Medical group
- Illinois Cancer SpecialistsArlington Heights, IL · 26 clinicians
Hospital affiliations
- Advocate Sherman HospitalElgin, IL
- Northwestern Lake Forest HospitalLake Forest, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Medicine McHenryMcHenry, IL
- Saint Joseph Hospital-ElginElgin, IL
Industry payments (Open Payments)
- 2025$2,514 · 95 payments from 25 companies
- 2024$1,573 · 76 payments from 25 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $350.06 | 19 |
| Tempus Ai, Inc | $298.36 | 5 |
| Daiichi Sankyo Inc. | $212.34 | 6 |
| Pfizer Inc. | $192.51 | 10 |
| Celgene Corporation | $153.23 | 8 |
What the 2025 payments were for
- Food and Beverage$2,215 · 92 payments
- Education$298.94 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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