Lillienne Chan, MD
Pediatric Gastroenterology · Dallas, TXNPI 1679771117
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 99.0% of the total across 108 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 23 manufacturers reported payments, led by AbbVie at 32.3% of the total.
Across 108 payments — averaging $20.18 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$704
- Ardelyx, Inc.$312
- Johnson & Johnson$211
- Regeneron Healthcare Solutions, Inc.$205
- Intercept Pharmaceuticals, Inc.$150
- Sanofi$129
- plus $469 from 17 others
What the payments were for
- Food & beverage$2,15799%
- Education$221%
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 | 38 | $704 |
| Ardelyx, Inc. | 12 | $312 |
| Johnson & Johnson | 10 | $211 |
| Regeneron Healthcare Solutions, Inc. | 10 | $205 |
| Intercept Pharmaceuticals, Inc. | 7 | $150 |
| Sanofi | 6 | $129 |
| Takeda Pharmaceuticals U.S.A., Inc. | 3 | $64 |
| Amgen | 3 | $55 |
| Vivus LLC | 3 | $46 |
| AstraZeneca | 2 | $45 |
| QOL Medical, LLC | 2 | $41 |
| Daiichi Sankyo Inc. | 1 | $27 |
| Redhill Biopharma Inc. | 1 | $23 |
| Celltrion USA Inc. | 1 | $20 |
| Mirum Pharmaceuticals, Inc. | 1 | $19 |
| Nestle Healthcare Nutrition Inc. | 1 | $19 |
| Novo Nordisk | 1 | $18 |
| Pfizer | 1 | $17 |
| Organon | 1 | $17 |
| Merck | 1 | $16 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $15 |
| Braintree Laboratories, Inc. | 1 | $13 |
| Shionogi Inc | 1 | $13 |
How this compares
$2,179 in reported general payments places this provider in the 75th percentile of 159 pediatric gastroenterology providers in Texas.
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 pediatric gastroenterology in Dallas
- Naveen MittalDallas$182K
- Amal AqulDallas$99K
- Charina RamirezDallas$60K
- Meghana SatheDallas$30K
- David TroendleDallas$14K
- Nandini ChannabasappaDallas$12K
- Rinarani SanghaviDallas$6K
- Bradley BarthDallas$6K
- Ricardo Medina-CentenoDallas$5K
- Megha MehtaDallas$4K
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.