Katherine Nguyen, MD
Gastroenterology · Houston, TXNPI 1083881916
Payments from drug & device makers
Across 106 payments — averaging $18.13 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$670
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$159
- Johnson & Johnson$146
- Lilly USA, LLC$136
- Medtronic$122
- Takeda Pharmaceuticals U.S.A., Inc.$92
- plus $598 from 23 others
What the payments were for
- Food & beverage$1,922100%
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) | 47 | $670 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 8 | $159 |
| Johnson & Johnson(2 entities) | 8 | $146 |
| Lilly USA, LLC | 3 | $136 |
| Medtronic | 1 | $122 |
| Takeda Pharmaceuticals U.S.A., Inc. | 6 | $92 |
| Boston Scientific | 1 | $54 |
| QOL Medical, LLC | 3 | $49 |
| Ironwood Pharmaceuticals, Inc | 2 | $42 |
| ERBE USA Inc | 2 | $40 |
| Gilead | 2 | $36 |
| Merck | 2 | $33 |
| Organon | 4 | $32 |
| Pfizer | 1 | $29 |
| Sanofi | 1 | $29 |
| Ferring Pharmaceuticals Inc. | 2 | $26 |
| Phathom Pharmaceuticals, Inc. | 1 | $25 |
| Sun Pharmaceutical Industries Inc. | 1 | $25 |
| Regeneron Healthcare Solutions, Inc. | 1 | $24 |
| Bristol Myers Squibb | 1 | $20 |
| Amgen | 1 | $18 |
| AstraZeneca | 1 | $18 |
| Endo Pharmaceuticals Inc. | 1 | $17 |
| Mallinckrodt Hospital Products Inc. | 1 | $17 |
| Ardelyx, Inc. | 1 | $15 |
| Ipsen Biopharmaceuticals, Inc | 1 | $14 |
| Intercept Pharmaceuticals, Inc. | 1 | $13 |
| Braintree Laboratories, Inc. | 1 | $13 |
| Intra-sana Laboratories | 1 | $9 |
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.
How this compares
$1,922 in reported general payments places this provider in the 35th percentile of 1,350 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates | 68 | $4,263 |
| Dexlansoprazole DrDexlansoprazole | 12 | $2,978 |
| Pantoprazole Sodium | 223 | $2,535 |
| Omeprazole | 91 | $1,355 |
| Lactulose | 15 | $567 |
| Dicyclomine Hcl | 27 | $495 |
| CholestyramineCholestyramine (With Sugar) | 12 | $452 |
| Esomeprazole Magnesium | 19 | $404 |
| Lansoprazole | 11 | $208 |
| Famotidine | 26 | $161 |
Paid to pharmacies, not to this prescriber.
Other gastroenterology in Houston
- Mazen NoureddinHouston$6.1M
- James MaherHouston$5.3M
- Uma MohanHouston$5M
- John VierlingHouston$2.8M
- Bincy AbrahamHouston$2.5M
- Jason HouHouston$2.3M
- Jignesh ShahHouston$1.7M
- Mouhamad Al-SabbaghHouston$1.6M
- Mohamed OthmanHouston$1.6M
- Harry OjeasHouston$1.5M
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.