Leonard Silverstein, MD
Allergy/ Immunology · Saddle River, NJNPI 1639138571
Payments from drug & device makers
Across 765 payments — averaging $33.03 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Hikma Pharmaceuticals USA$7K
- Genentech USA, Inc.$5K
- AstraZeneca$2K
- GSK$2K
- Sanofi$2K
- Regeneron Healthcare Solutions, Inc.$1K
- plus $6K from 32 others
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 |
|---|---|---|
| Hikma Pharmaceuticals USA | 14 | $7,397 |
| Genentech USA, Inc. | 30 | $4,941 |
| AstraZeneca | 103 | $2,394 |
| GSK | 138 | $2,325 |
| Sanofi | 83 | $1,665 |
| Regeneron Healthcare Solutions, Inc. | 57 | $1,007 |
| LEO Pharma Inc. | 50 | $646 |
| Pfizer | 33 | $520 |
| ARS Pharmaceuticals Operations, Inc. | 30 | $473 |
| Kaleo, Inc. | 30 | $448 |
| Novartis | 22 | $397 |
| Galderma Laboratories, L.p. | 16 | $381 |
| Optinose US, Inc. | 22 | $329 |
| Amgen | 18 | $309 |
| AbbVie | 16 | $248 |
| Incyte Corporation | 14 | $229 |
| Covis Pharma GmbH | 16 | $229 |
| Alk-abello, Inc | 12 | $207 |
| Lilly USA, LLC | 11 | $207 |
| Takeda Pharmaceuticals U.S.A., Inc. | 8 | $161 |
| Teva Pharmaceuticals USA, Inc. | 8 | $118 |
| Sanofi-aventis U.S. LLC | 2 | $114 |
| Boehringer Ingelheim | 7 | $99 |
| Grifols USA, LLC | 3 | $72 |
| Biocryst US Sales Co., LLC | 3 | $46 |
| Circassia Inc. | 3 | $38 |
| Merck | 2 | $32 |
| Arcutis Biotherapeutics, Inc. | 2 | $32 |
| Aerin Medical Inc. | 1 | $31 |
| Mylan Specialty L.p. | 2 | $30 |
| Pharming Healthcare, Inc. | 2 | $30 |
| Blueprint Medicines Corporation | 1 | $20 |
| Azurity Pharmaceuticals, Inc. | 1 | $19 |
| Aimmune Therapeutics, Inc. | 1 | $18 |
| Paratek Pharmaceuticals, Inc. | 1 | $17 |
| USWM, LLC | 1 | $15 |
| Eyevance Pharmaceuticals LLC | 1 | $14 |
| Bausch & Lomb, A Division Of Bausch Health US, LLC | 1 | $14 |
How this compares
Too few allergy/ immunology providers in New Jerseyto place this figure against a meaningful peer group, so we don't.
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 allergy/ immunology in Saddle River
- Ruth GoldSaddle River$2K
- Alexander MarottaWyckoff$12K
- Thomas SelvaggiHackensack$12K
- Sunita KanumuryDenville$4K
- Meera KhedkarBerkeley Heights$4K
- James MaddenManahawkin$0
- Carolyn GoodsteinEnglewood$0
- Philip CaseFreehold$0
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.