Ahmad F. Zegar, MD
NPI 1902891328ActiveIndividual· Internal Medicine· Merrillville, IN
Internal Medicine (MD) in Merrillville, Indiana, trained at R Franklin University of Med & Sci/Chicago Medical School (class of 1987). 142 Medicare patients in 2024, $20,223 paid; nearly all of their 86 Part D prescriptions were generic (95%).
Overview
| NPI | 1902891328 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 12, 2005 |
| Last updated in NPPES | Apr 1, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 01042256 | IN |
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 - Emergency Medicine (IL); Practitioner - Emergency Medicine (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 142 |
|---|---|
| Services billed | 240 across 10 procedure codes |
| Paid by Medicare | $20,223 |
Part D prescriptions in 2024
| Prescriptions (claims) | 86 · 88 30-day fills |
|---|---|
| Patients | 43 |
| Total drug cost | $1,052 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | R Franklin University of Med & Sci/Chicago Medical School |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Emergency Medicine |
Medical group
- Heartland Emergency Physicians PLLCChicago, IL · 10 clinicians
Hospital affiliation
- South Shore HospitalChicago, IL
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 30 internal medicine physicians in Merrillville · All internal medicine physicians in Indiana