Kumarasamy Sivakumar
Internal Medicine · Lancaster, CANPI 1083762884
Payments from drug & device makers
Across 109 payments — averaging $17.62 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novo Nordisk$492
- AbbVie$225
- GSK$199
- Amgen$153
- Avanir Pharmaceuticals, Inc.$130
- Ironwood Pharmaceuticals, Inc$126
- plus $595 from 13 others
What the payments were for
- Food & beverage$1,921100%
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 |
|---|---|---|
| Novo Nordisk | 31 | $492 |
| AbbVie(2 entities) | 16 | $225 |
| GSK | 11 | $199 |
| Amgen | 7 | $153 |
| Avanir Pharmaceuticals, Inc. | 7 | $130 |
| Ironwood Pharmaceuticals, Inc | 6 | $126 |
| Boehringer Ingelheim | 5 | $100 |
| Sanofi-aventis U.S. LLC | 5 | $94 |
| Lilly USA, LLC | 4 | $87 |
| AstraZeneca | 5 | $76 |
| Pfizer | 2 | $46 |
| Johnson & Johnson | 1 | $44 |
| Novartis | 2 | $42 |
| Merck | 2 | $34 |
| Osiris Therapeutics Inc. | 1 | $20 |
| Biohaven Pharmaceuticals, Inc. | 1 | $16 |
| Regeneron Healthcare Solutions, Inc. | 1 | $13 |
| Organogenesis Inc. | 1 | $12 |
| Smith+Nephew | 1 | $11 |
How this compares
$1,921 in reported general payments places this provider in the 80th percentile of 13,581 internal medicine providers in California.
Other internal medicine in Lancaster
- Andrew ChengSouth San Francisco$55.1M
- Joel NeutelTustin$34.9M
- Donald BrandonSan Diego$34M
- William TownerLos Angeles$27.4M
- Rahul AggarwalSan Francisco$24M
- Masoud AzizadNorthridge$21.1M
- Helen StaceyWalnut Creek$20.4M
- Rohit Loombala Jolla$15.1M
- Zeid KayaliColton$14.2M
- Alexandra DrakakiSanta Monica$14.2M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.