Nader Ismail, DO
Nephrology · Merrillville, INNPI 1689135618
Payments from drug & device makers
Across 66 payments — averaging $23.28 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$196
- Otsuka America Pharmaceutical, Inc.$191
- Bayer$163
- Ardelyx, Inc.$159
- Travere Therapeutics, Inc.$119
- Calliditas Therapeutics US Inc.$103
- plus $606 from 16 others
What the payments were for
- Food & beverage$1,51699%
- Education$211%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Amgen | 13 | $196 |
| Otsuka America Pharmaceutical, Inc. | 7 | $191 |
| Bayer | 6 | $163 |
| Ardelyx, Inc. | 6 | $159 |
| Travere Therapeutics, Inc. | 5 | $119 |
| Calliditas Therapeutics US Inc. | 3 | $103 |
| Mallinckrodt Hospital Products Inc. | 3 | $90 |
| Fresenius USA Marketing, Inc. | 4 | $88 |
| Novartis | 3 | $66 |
| AstraZeneca(2 entities) | 2 | $51 |
| Genentech USA, Inc. | 2 | $42 |
| ANI Pharmaceuticals, Inc. | 2 | $41 |
| Akebia Therapeutics Inc | 1 | $29 |
| Novo Nordisk | 1 | $26 |
| Scpharmaceuticals Inc. | 1 | $25 |
| Apellis Pharmaceuticals, Inc. | 1 | $25 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $25 |
| OPKO Pharmaceuticals, LLC | 1 | $21 |
| Lilly USA, LLC | 1 | $21 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | 1 | $20 |
| GSK | 1 | $19 |
| Ultragenyx Pharmaceutical Inc. | 1 | $18 |
How this compares
$1,536 in reported general payments places this provider in the 55th percentile of 238 nephrology providers in Indiana.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Other nephrology in Merrillville
- Kenneth ChoiMerrillville$392K
- Kevin MyrieMerrillville$51K
- Venkat VavilalaMerrillville$8K
- Saurabh ChawlaMerrillville$8K
- Marisela VarelaMerrillville$7K
- Yves BrignolMerrillville$6K
- Gaurav AlrejaMerrillville$6K
- Gaurav AgarwalMerrillville$5K
- Andrew OshaughnessyFort Wayne$1.2M
- Rajiv AgarwalIndianapolis$1.2M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.