Zafar Ahmed, MD
NPI 1700872272ActiveIndividual· Internal Medicine· Crestwood, IL
Internal Medicine (MD) in Crestwood, Illinois, trained at Rowan University School of Osteopathic Medicine (class of 1983). Their prescriptions cost Medicare Part D more than their services did: $922,621 for 10,119 claims, against $70,494 paid for services in 2024. Pfizer Inc. was the largest of 2 companies reporting payments in 2025, $61.21 in all, mostly food and beverage.
Overview
| NPI | 1700872272 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 21, 2005 |
| Last updated in NPPES | May 13, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036-089465 | IL |
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 (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 210 |
|---|---|
| Services billed | 832 across 26 procedure codes |
| Paid by Medicare | $70,494 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,119 · 18,885 30-day fills |
|---|---|
| Patients | 574 |
| Total drug cost | $922,621 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Rowan University School of Osteopathic Medicine |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Internal Medicine |
Medical group
- Asad Zaman MD SCPalos Heights, IL · 8 clinicians
Hospital affiliations
- Advocate Christ Hospital & Medical CenterOak Lawn, IL
- Advocate Trinity HospitalChicago, IL
- Ingalls Memorial HospitalHarvey, IL
- Palos Community HospitalPalos Heights, IL
Other facilities
- Advocate Home Health Care ServHome health agency · Oakbrook, IL
- Medic Home Health Care, LLCHome health agency · Bolingbrook, IL
Industry payments (Open Payments)
- 2025$61.21 · 3 payments from 2 companies
- 2024$181.27 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $41.66 | 2 |
| Bioventus LLC | $19.55 | 1 |
What the 2025 payments were for
- Food and Beverage$61.21 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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