John Ioannou, MD
Nephrology · Rockville Centre, NYNPI 1851330328
Payments from drug & device makers
Across 342 payments — averaging $21.94 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$1K
- Bayer$944
- Otsuka America Pharmaceutical, Inc.$894
- Amgen$715
- Vifor Pharma, Inc.$636
- Mallinckrodt Hospital Products Inc.$425
- plus $3K from 26 others
What the payments were for
- Food & beverage$7,42699%
- Education$781%
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 |
|---|---|---|
| AstraZeneca(2 entities) | 50 | $1,160 |
| Bayer | 41 | $944 |
| Otsuka America Pharmaceutical, Inc. | 53 | $894 |
| Amgen(2 entities) | 34 | $715 |
| Vifor Pharma, Inc. | 26 | $636 |
| Mallinckrodt Hospital Products Inc. | 18 | $425 |
| Ardelyx, Inc. | 12 | $282 |
| Nxstage Medical, Inc. | 2 | $265 |
| Novartis | 11 | $221 |
| Travere Therapeutics, Inc. | 13 | $212 |
| Calliditas Therapeutics US Inc. | 9 | $200 |
| Aurinia Pharma U.S., Inc. | 10 | $199 |
| ANI Pharmaceuticals, Inc. | 6 | $132 |
| Boehringer Ingelheim | 7 | $128 |
| GSK | 5 | $124 |
| Novo Nordisk | 5 | $123 |
| OPKO Pharmaceuticals, LLC | 7 | $121 |
| Fresenius USA Marketing, Inc. | 5 | $100 |
| Renalytix AI, Inc. | 4 | $96 |
| Cumberland Pharmaceuticals, Inc. | 6 | $92 |
| Rockwell Medical, Inc. | 1 | $76 |
| Mallinckrodt Enterprises LLC | 4 | $69 |
| Lilly USA, LLC | 3 | $53 |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $44 |
| Bard Peripheral Vascular, Inc. | 1 | $43 |
| Scpharmaceuticals Inc. | 1 | $31 |
| Idorsia Pharmaceuticals US Inc | 1 | $25 |
| Ultragenyx Pharmaceutical Inc. | 1 | $23 |
| Akebia Therapeutics Inc | 1 | $20 |
| Daiichi Sankyo Inc. | 1 | $20 |
| Pfizer | 1 | $19 |
| Baxter Healthcare | 1 | $15 |
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.
- NXSTAGE SYSTEM ONE$265
- FARXIGA$127
- LOKELMA$125
- Veltassa$119
How this compares
$7,505 in reported general payments places this provider in the 80th percentile of 935 nephrology providers in New York.
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 | 159 | $187,106 |
| VelphoroSucroferric Oxyhydroxide | 25 | $65,221 |
| LokelmaSodium Zirconium Cyclosilicate | 25 | $28,374 |
| KerendiaFinerenone | 15 | $24,722 |
| Cinacalcet Hcl | 25 | $19,907 |
| JardianceEmpagliflozin | 13 | $19,536 |
| VeltassaPatiromer Calcium Sorbitex | 13 | $19,172 |
| JentaduetoLinagliptin/Metformin Hcl | 12 | $6,342 |
| Sevelamer Carbonate | 17 | $4,279 |
| ProsolParenteral Amino Acid 20% No.1 | 35 | $4,194 |
| Potassium Citrate ErPotassium Citrate | 53 | $2,357 |
| Nebivolol Hcl | 26 | $1,895 |
| Metoprolol Succinate | 65 | $1,570 |
| Chlorthalidone | 82 | $1,531 |
| Labetalol Hcl | 34 | $1,487 |
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 | $1,160 | $215,479184 claims |
| Fresenius USA Marketing, Inc.Velphoro | $100 | $65,22125 claims |
| Boehringer IngelheimJardiance, Jentadueto | $128 | $25,87725 claims |
| BayerKerendia | $944 | $24,72215 claims |
| ANI Pharmaceuticals, Inc.Valsartan | $132 | $1,03648 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 80th percentile of 935 nephrology providers in New York.
Other nephrology in Rockville Centre
- Joji TokitaNew York$8.4M
- Krzysztof KirylukNew York$6.7M
- David BernardNew York$6M
- Andrew BombackNew York$3.4M
- Pietro CanettaNew York$3.2M
- Robert LynnBronx$2M
- Jodumutt BhatMaspeth$1.5M
- Gerald AppelNew York$1.5M
- David CharytanNew York$1.3M
- Frank CortazarAlbany$1.1M
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.