William Asch
Nephrology · New Haven, CTNPI 1003933326
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $2,880 of the $2,880 with a category attached, or 100.0%. Every reported general payment came from a single manufacturer, Amgen.
Across 1 payment — averaging $2880.00 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$3K
Across 40 payments — averaging $2551.77 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- CSL Behring$63K
- Astellas Pharma Global Development$22K
- Novartis$17K
What the payments were for
- Speaking & faculty fees$2,880100%
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 | 1 | $2,880 |
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.
- PROCYSBI$2,880
How this compares
$2,880 in reported general payments places this provider in the 70th percentile of 144 nephrology providers in Connecticut.
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 |
|---|---|---|
| Envarsus XrTacrolimus | 27 | $22,944 |
| TradjentaLinagliptin | 20 | $15,627 |
| Cinacalcet Hcl | 53 | $11,003 |
| NeoralCyclosporine, Modified | 12 | $9,686 |
| Atovaquone | 21 | $8,384 |
| LokelmaSodium Zirconium Cyclosilicate | 12 | $4,597 |
| Mycophenolate Mofetil | 26 | $2,081 |
| Tacrolimus | 24 | $1,379 |
| Prednisone | 256 | $1,348 |
| Tamsulosin Hcl | 88 | $1,231 |
| Carvedilol | 118 | $908 |
| Clonidine | 11 | $876 |
| Amlodipine Besylate | 135 | $806 |
| Chlorthalidone | 35 | $670 |
| Metoprolol Tartrate | 66 | $583 |
Paid to pharmacies, not to this prescriber.
Other nephrology in New Haven
- Robert AlpernNew Haven$4.9M
- Richard FormicaNew Haven$198K
- Stefan SomloNew Haven$111K
- Fredric FinkelsteinNew Haven$70K
- Justin BelcherNew Haven$59K
- Ladan GolestanehNew Haven$54K
- Aldo PeixotoNew Haven$17K
- Ali Abu-AlfaNew Haven$16K
- Lloyd CantleyNew Haven$14K
- Sue ChangNew Haven$9K
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.