Long Dang, MD
Gastroenterology · Westminster, CANPI 1346324613
Payments from drug & device makers
Across 471 payments — averaging $9109.55 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Genentech, Inc.$4.1M
- Braintree Laboratories, Inc.$78K
- AbbVie$49K
- Gilead$15K
- Phathom Pharmaceuticals, Inc.$11K
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$6K
- plus $1K from 14 others
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 |
|---|---|---|
| Genentech, Inc. | 75 | $4,129,764 |
| Braintree Laboratories, Inc. | 22 | $77,788 |
| AbbVie(2 entities) | 180 | $49,472 |
| Gilead | 63 | $14,642 |
| Phathom Pharmaceuticals, Inc. | 32 | $11,183 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 23 | $6,428 |
| Nestle Healthcare Nutrition Inc. | 18 | $369 |
| Aimmune Therapeutics, Inc. | 13 | $215 |
| Ironwood Pharmaceuticals, Inc | 9 | $173 |
| Ferring Pharmaceuticals Inc. | 9 | $139 |
| Takeda Pharmaceuticals U.S.A., Inc. | 13 | $115 |
| Redhill Biopharma Inc. | 4 | $74 |
| Boston Scientific | 1 | $51 |
| Vivus LLC | 2 | $42 |
| Intercept Pharmaceuticals, Inc. | 2 | $35 |
| Sanofi | 1 | $30 |
| Shionogi Inc | 1 | $26 |
| Merck | 1 | $24 |
| Agios Pharmaceuticals, Inc. | 1 | $22 |
| Micro-tech Endoscopy USA, Inc. | 1 | $7 |
How this compares
$4,290,599 in reported general payments places this provider in the 95th percentile of 1,885 gastroenterology providers in California.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Other gastroenterology in Westminster
- Peter WinkleCypress$116.7M
- Manuchehr DaraniSanta Ana$17.7M
- Jatinder PruthiLancaster$4.4M
- Muhammad SheikhFresno$4.3M
- Gregory WienerChula Vista$3.5M
- Gil MelmedLos Angeles$3M
- Christopher BowlusSacramento$3M
- Bennett RothLos Angeles$2.8M
- Brigid BolandSan Diego$2.4M
- Huy NguyenSan Jose$2.3M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.