William McAllister
Internal Medicine · Corte Madera, CANPI 1821072646
Payments from drug & device makers
Across 177 payments — averaging $17.24 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$1K
- Boehringer Ingelheim$441
- Pfizer$276
- Kowa Pharmaceuticals America, Inc.$266
- AbbVie$233
- AstraZeneca$106
- plus $537 from 12 others
What the payments were for
- Food & beverage$3,051100%
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 |
|---|---|---|
| Amgen | 64 | $1,192 |
| Boehringer Ingelheim | 35 | $441 |
| Pfizer | 15 | $276 |
| Kowa Pharmaceuticals America, Inc. | 16 | $266 |
| AbbVie(2 entities) | 12 | $233 |
| AstraZeneca | 6 | $106 |
| Bausch Health US, LLC | 5 | $99 |
| Regeneron Healthcare Solutions, Inc. | 4 | $79 |
| Johnson & Johnson | 3 | $69 |
| Novo Nordisk | 3 | $55 |
| Endo Pharmaceuticals Inc. | 3 | $48 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 3 | $42 |
| E.r. Squibb & Sons, L.L.C. | 2 | $38 |
| Merck | 2 | $36 |
| Eisai Inc. | 1 | $22 |
| Lilly USA, LLC | 1 | $19 |
| Astellas Pharma US Inc | 1 | $17 |
| Daiichi Sankyo Inc. | 1 | $14 |
How this compares
$3,051 in reported general payments places this provider in the 85th percentile of 13,581 internal medicine providers in California.
Other internal medicine in Corte Madera
- 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.