Nader Ismail, DO
NPI 1689135618ActiveIndividual· Internal Medicine, Nephrology· Merrillville, IN
Internal Medicine, Nephrology (DO) with Nephrology Associates of Northern Indiana PC, practicing in Merrillville, Indiana. In 2024 Medicare paid $53,292 for 246 patients, and Part D covered 71 of their prescriptions, 77% of them generic. Amgen Inc. was the largest of 18 companies reporting payments in 2025, $1,169 in all, mostly food and beverage. Lists Community Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1689135618 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | Yes |
| NPI issued | Mar 31, 2019 |
| Last updated in NPPES | Jun 19, 2025 |
| Certified by provider | Jun 19, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 02007817A | IN |
| Internal Medicine, Nephrology | 207RN0300X | 036.161002 | 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 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 - Nephrology (IL); Practitioner - Nephrology (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 246 |
|---|---|
| Services billed | 787 across 11 procedure codes |
| Paid by Medicare | $53,292 |
Part D prescriptions in 2024
| Prescriptions (claims) | 71 · 154 30-day fills |
|---|---|
| Patients | 41 |
| Total drug cost | $16,474 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Nephrology |
Medical group
- Nephrology Associates of Northern Indiana PCVan Wert, OH · 65 clinicians
Hospital affiliations
- Community HospitalMunster, IN
- Franciscan Health Crown PointCrown Point, IN
- Franciscan Health DyerDyer, IN
- Methodist Hospitals IncGary, IN
- St Mary Medical Center IncHobart, IN
Other facilities
- Fmc - Crown PointDialysis facility · Crown Point, IN
- Fmc - Merrillville Dialysis CenterDialysis facility · Merrillville, IN
- Powers Health Rehabilitation CenterInpatient rehabilitation facility · Crown Point, IN
Industry payments (Open Payments)
- 2025$1,169 · 51 payments from 18 companies
- 2024$226.18 · 9 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $195.71 | 13 |
| Ardelyx, Inc. | $135.41 | 5 |
| Otsuka America Pharmaceutical, Inc. | $134.48 | 5 |
| Bayer Healthcare Pharmaceuticals Inc. | $131.71 | 5 |
| Calliditas Therapeutics US Inc. | $102.58 | 3 |
What the 2025 payments were for
- Food and Beverage$1,169 · 51 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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