Maria del Castillo, MD
Nephrology · Amherst, NYNPI 1467572537
Payments from drug & device makers
Across 40 payments — averaging $11.50 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Travere Therapeutics, Inc.$183
- Otsuka America Pharmaceutical, Inc.$144
- Bayer$33
- Aurinia Pharma U.S., Inc.$28
- Ardelyx, Inc.$28
- Akebia Therapeutics Inc$25
- plus $19 from 1 others
What the payments were for
- Food & beverage$20144%
- Education$25956%
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 |
|---|---|---|
| Travere Therapeutics, Inc. | 31 | $183 |
| Otsuka America Pharmaceutical, Inc. | 3 | $144 |
| Bayer | 2 | $33 |
| Aurinia Pharma U.S., Inc. | 1 | $28 |
| Ardelyx, Inc. | 1 | $28 |
| Akebia Therapeutics Inc | 1 | $25 |
| Calliditas Therapeutics US Inc. | 1 | $19 |
How this compares
$460 in reported general payments places this provider in the 40th 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 | 28 | $29,739 |
| JardianceEmpagliflozin | 16 | $15,997 |
| Bumetanide | 100 | $3,602 |
| Sevelamer Hcl | 12 | $2,485 |
| Sevelamer Carbonate | 22 | $1,810 |
| Enalapril Maleate | 50 | $1,505 |
| Losartan Potassium | 64 | $1,487 |
| Nifedipine ErNifedipine | 32 | $1,441 |
| Calcitriol | 65 | $1,349 |
| Potassium Citrate ErPotassium Citrate | 16 | $1,300 |
| Metolazone | 42 | $917 |
| Torsemide | 42 | $832 |
| Potassium Chloride | 26 | $778 |
| Famotidine | 51 | $745 |
| Carvedilol | 57 | $700 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Amherst
- 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.