Mark Allison
Internal Medicine · Riverside, CANPI 1164471223
Payments from drug & device makers
Across 152 payments — averaging $15.93 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$326
- Novo Nordisk$311
- Boehringer Ingelheim$233
- Pfizer$230
- Merck$179
- AbbVie$153
- plus $990 from 22 others
What the payments were for
- Food & beverage$2,412100%
- Education$100%
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 |
|---|---|---|
| AstraZeneca | 20 | $326 |
| Novo Nordisk | 26 | $311 |
| Boehringer Ingelheim | 13 | $233 |
| Pfizer | 23 | $230 |
| Merck | 9 | $179 |
| AbbVie(2 entities) | 7 | $153 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 7 | $133 |
| GSK | 5 | $110 |
| Amgen | 5 | $94 |
| Sanofi-aventis U.S. LLC | 4 | $82 |
| Lilly USA, LLC | 5 | $80 |
| E.r. Squibb & Sons, L.L.C. | 5 | $79 |
| Eisai Inc. | 3 | $44 |
| Boston Scientific | 2 | $40 |
| Amarin Pharma, Inc. | 2 | $35 |
| Esperion Therapeutics, Inc. | 2 | $35 |
| Johnson & Johnson | 2 | $34 |
| Abbott | 1 | $28 |
| Breathe Technologies, Inc. | 1 | $28 |
| Melinta Therapeutics, LLC | 2 | $27 |
| Ironwood Pharmaceuticals, Inc | 1 | $26 |
| Otsuka America Pharmaceutical, Inc. | 1 | $24 |
| Daiichi Sankyo Inc. | 1 | $23 |
| Vivus LLC | 1 | $16 |
| Arbor Pharmaceuticals, Inc. | 1 | $15 |
| Novartis | 1 | $13 |
| Optos, Inc. | 1 | $12 |
| Biohaven Pharmaceutical Holding Company Ltd. | 1 | $12 |
How this compares
$2,422 in reported general payments places this provider in the 80th percentile of 13,581 internal medicine providers in California.
Other internal medicine in Riverside
- 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.