Amitabha Karmakar
Critical Care Medicine · Roseville, CANPI 1164461554
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 285 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 37 manufacturers reported payments, led by GSK at 24.2% of the total.
Across 285 payments — averaging $18.13 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- GSK$1K
- Boehringer Ingelheim$673
- AstraZeneca$460
- AbbVie$304
- Merck$200
- United Therapeutics Corporation$189
- plus $2K from 31 others
What the payments were for
- Food & beverage$5,166100%
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 |
|---|---|---|
| GSK | 74 | $1,248 |
| Boehringer Ingelheim | 35 | $673 |
| AstraZeneca | 28 | $460 |
| AbbVie(2 entities) | 17 | $304 |
| Merck | 12 | $200 |
| United Therapeutics Corporation | 10 | $189 |
| Genentech USA, Inc. | 3 | $181 |
| Gilead | 8 | $181 |
| Harmony Biosciences LLC | 9 | $176 |
| Takeda Pharmaceuticals U.S.A., Inc. | 8 | $168 |
| Electromed, Inc. | 10 | $158 |
| Grifols USA, LLC | 7 | $147 |
| Advanced Respiratory, Inc | 10 | $142 |
| Philips North America LLC | 5 | $112 |
| Johnson & Johnson | 10 | $108 |
| Viiv Healthcare Company | 3 | $79 |
| Bayer | 4 | $72 |
| Pulmonx Corporation | 3 | $46 |
| Astellas Pharma US Inc | 2 | $45 |
| Sunovion Pharmaceuticals Inc. | 4 | $45 |
| Actelion Pharmaceuticals US, Inc. | 2 | $41 |
| Mallinckrodt Hospital Products Inc. | 2 | $41 |
| Paratek Pharmaceuticals, Inc. | 2 | $40 |
| Shire North American Group Inc | 2 | $39 |
| Circassia Inc. | 2 | $36 |
| Pfizer | 2 | $35 |
| Sanofi | 1 | $24 |
| Mayne Pharma Commercial LLC | 1 | $24 |
| Amgen | 1 | $21 |
| Vanda Pharmaceuticals Inc. | 1 | $20 |
| Optinose US, Inc. | 1 | $18 |
| Chiesi USA, Inc. | 1 | $16 |
| Mylan Specialty L.p. | 1 | $16 |
| La Jolla Pharmaceutical Company | 1 | $16 |
| Resmed Corp | 1 | $15 |
| CSL Behring | 1 | $15 |
| Biocryst Pharmaceuticals, Inc. | 1 | $15 |
How this compares
$5,166 in reported general payments places this provider in the 85th percentile of 715 critical care medicine providers in California.
Other critical care medicine in Roseville
- Cedric Franklin RutlandRiverside$3.2M
- Chinh PhanSacramento$467K
- Timothy AlbertsonSacramento$418K
- Stephen ChenMonterey Park$394K
- Bassam YaghmourOrange$376K
- Xuanha WhiteSan Diego$343K
- Ken YonedaSacramento$173K
- Praveen AkuthotaSan Diego$169K
- Ivan ChengSan Francisco$162K
- Brian ShermanOxnard$147K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.