Duminda Siripala, MD
Nephrology · Altoona, PANPI 1932480571
Payments from drug & device makers
Across 139 payments — averaging $20.83 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$490
- Vifor Pharma, Inc.$366
- Bayer$353
- Otsuka America Pharmaceutical, Inc.$260
- AstraZeneca$189
- Ardelyx, Inc.$181
- plus $1K from 24 others
What the payments were for
- Food & beverage$2,883100%
- Education$120%
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 | 19 | $490 |
| Vifor Pharma, Inc. | 19 | $366 |
| Bayer | 22 | $353 |
| Otsuka America Pharmaceutical, Inc. | 16 | $260 |
| AstraZeneca(2 entities) | 12 | $189 |
| Ardelyx, Inc. | 3 | $181 |
| OPKO Pharmaceuticals, LLC | 8 | $141 |
| GSK | 1 | $126 |
| Fresenius USA Marketing, Inc. | 7 | $118 |
| Cipla USA Inc. | 1 | $84 |
| Johnson & Johnson | 2 | $80 |
| Amarin Pharma, Inc. | 3 | $44 |
| Boehringer Ingelheim | 3 | $42 |
| Novo Nordisk | 2 | $42 |
| Akebia Therapeutics Inc | 2 | $37 |
| Mallinckrodt Hospital Products Inc. | 2 | $37 |
| Aurinia Pharma U.S., Inc. | 2 | $35 |
| Travere Therapeutics, Inc. | 2 | $33 |
| Xeris Pharmaceuticals, Inc. | 2 | $27 |
| Alnylam Pharmaceuticals Inc. | 1 | $27 |
| Kyowa Kirin, Inc. | 1 | $25 |
| Scpharmaceuticals Inc. | 1 | $23 |
| Apellis Pharmaceuticals, Inc. | 1 | $21 |
| Novartis | 1 | $20 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $20 |
| Daiichi Sankyo Inc. | 1 | $18 |
| W. L. Gore & Associates, Inc. | 1 | $17 |
| Calliditas Therapeutics US Inc. | 1 | $16 |
| Genentech USA, Inc. | 1 | $13 |
| Cumberland Pharmaceuticals, Inc. | 1 | $12 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- XPHOZAH 30 MG$134
- BENLYSTA$126
How this compares
$2,895 in reported general payments places this provider in the 75th percentile of 586 nephrology providers in Pennsylvania.
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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| FarxigaDapagliflozin Propanediol | 115 | $70,696 |
| JardianceEmpagliflozin | 88 | $58,368 |
| ProsolParenteral Amino Acid 20% No.1 | 243 | $39,469 |
| LokelmaSodium Zirconium Cyclosilicate | 31 | $24,204 |
| ProcritEpoetin Alfa | 16 | $21,365 |
| AuryxiaFerric Citrate | 12 | $19,282 |
| VeltassaPatiromer Calcium Sorbitex | 15 | $15,325 |
| TrulicityDulaglutide | 14 | $13,274 |
| InvokanaCanagliflozin | 18 | $12,877 |
| JanuviaSitagliptin Phosphate | 20 | $11,020 |
| Calcitriol | 550 | $8,444 |
| Sevelamer Carbonate | 91 | $6,256 |
| Doxercalciferol | 17 | $5,120 |
| Bumetanide | 100 | $4,201 |
| Sevelamer Hcl | 12 | $4,010 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| AstraZenecaFarxiga, Lokelma | $189 | $94,900146 claims |
| Boehringer IngelheimJardiance | $42 | $58,36888 claims |
| Johnson & JohnsonProcrit, Invokana | $80 | $34,24234 claims |
| Akebia Therapeutics IncAuryxia | $37 | $19,28212 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 75th percentile of 586 nephrology providers in Pennsylvania.
Other nephrology in Altoona
- Katalin SusztakPhiladelphia$4.8M
- Debbie Cohen SteinPhiladelphia$2.8M
- Nelson KopytAllentown$2.1M
- Iris LeePhiladelphia$1.9M
- Abdallahsassine GearaPhiladelphia$1.2M
- Alexander ChangDanville$1000K
- Gaia MuallemPhiladelphia$942K
- Chike OkechukwuUpland$875K
- Christopher GislerPittsburgh$757K
- Umar FarooqHershey$723K
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.