Earl Darby
Gastroenterology · Oakland, CANPI 1790743292
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 195 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 19 manufacturers reported payments, led by AbbVie at 25.3% of the total. Reporting peaked in 2019 at $1,477 and has fallen 98.7% since, to $19 in 2022.
Across 195 payments — averaging $17.88 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$883
- Gilead$626
- Johnson & Johnson$488
- Takeda Pharmaceuticals U.S.A., Inc.$359
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$197
- Daiichi Sankyo Inc.$175
- plus $757 from 13 others
What the payments were for
- Food & beverage$3,486100%
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 |
|---|---|---|
| AbbVie(2 entities) | 48 | $883 |
| Gilead | 39 | $626 |
| Johnson & Johnson | 29 | $488 |
| Takeda Pharmaceuticals U.S.A., Inc. | 25 | $359 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 12 | $197 |
| Daiichi Sankyo Inc. | 8 | $175 |
| Shionogi Inc | 4 | $116 |
| Cook Medical LLC | 1 | $110 |
| Pfizer | 5 | $90 |
| Braintree Laboratories, Inc. | 4 | $70 |
| Intercept Pharmaceuticals, Inc. | 3 | $59 |
| Redhill Biopharma Inc. | 3 | $57 |
| Endo Pharmaceuticals Inc. | 3 | $56 |
| Merck | 3 | $55 |
| Ferring Pharmaceuticals Inc. | 3 | $48 |
| Alfasigma USA, Inc. | 2 | $41 |
| Vivus LLC | 1 | $24 |
| Ironwood Pharmaceuticals, Inc | 1 | $17 |
| UCB, Inc. | 1 | $13 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- Vemlidy$114
- Cook Medical Hemostasis$110
How this compares
$3,486 in reported general payments places this provider in the 60th percentile of 1,885 gastroenterology providers in California.
Other gastroenterology in Oakland
- Neil StollmanOakland$158K
- Bennett RothLos Angeles$2.8M
- Douglas NguyenMission Viejo$2M
- Sammy SaabLos Angeles$1.9M
- Kenneth ChangNewport Beach$1.3M
- Joo HwangStanford$1M
- Drew SchembreWalnut Creek$659K
- Quan Nhula Jolla$641K
- Sadeea AbbasiLos Angeles$556K
- Ali RezaieWest Hollywood$519K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.