Khiem Nguyen, MD
Gastroenterology · du Bois, PANPI 1316922511
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (53.6%), food and beverage and travel and lodging — rather than concentrated in one kind of arrangement. Evoke Pharma, Inc. accounts for 66.5% of it on its own, with 25 other manufacturers making up the rest. Reporting peaked in 2023 at $7,580 and has fallen 97.7% since, to $176 in 2025.
Across 174 payments — averaging $66.54 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Evoke Pharma, Inc.$8K
- Olympus Corporation Of The Americas$1K
- AbbVie$437
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$378
- Takeda Pharmaceuticals U.S.A., Inc.$357
- Ironwood Pharmaceuticals, Inc$313
- plus $1K from 20 others
What the payments were for
- Speaking & faculty fees$6,20054%
- Travel & lodging$1,81716%
- Food & beverage$3,29528%
- Education$520%
- Gifts$2132%
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 |
|---|---|---|
| Evoke Pharma, Inc. | 16 | $7,702 |
| Olympus Corporation Of The Americas | 4 | $1,007 |
| AbbVie(2 entities) | 25 | $437 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 28 | $378 |
| Takeda Pharmaceuticals U.S.A., Inc. | 32 | $357 |
| Ironwood Pharmaceuticals, Inc | 16 | $313 |
| Johnson & Johnson | 17 | $306 |
| Braintree Laboratories, Inc. | 4 | $233 |
| Pfizer | 6 | $210 |
| Gilead | 7 | $210 |
| Olympus America Inc. | 2 | $85 |
| Boston Scientific | 3 | $56 |
| Conmed Corporation | 1 | $37 |
| Regeneron Healthcare Solutions, Inc. | 1 | $27 |
| Aimmune Therapeutics, Inc. | 1 | $23 |
| Digestive Care, Inc. | 1 | $21 |
| Amgen | 1 | $21 |
| Lilly USA, LLC | 1 | $21 |
| Merck | 1 | $20 |
| Redhill Biopharma Inc. | 1 | $20 |
| Shield Therapeutics Inc | 1 | $19 |
| Ardelyx, Inc. | 1 | $18 |
| Bristol Myers Squibb | 1 | $18 |
| Phathom Pharmaceuticals, Inc. | 1 | $16 |
| Intercept Pharmaceuticals, Inc. | 1 | $15 |
| QOL Medical, LLC | 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.
- GIMOTI$7,531
- OER-PRO$966
- Olympus Capital Accessories$966
- Olympus Endoscopic Ultrasound Scopes$966
- OER Pro Accessories$966
- Epclusa$125
- XELJANZ$101
How this compares
$11,577 in reported general payments places this provider in the 80th percentile of 935 gastroenterology providers in Pennsylvania.
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 |
|---|---|---|
| Omeprazole | 29 | $570 |
| Esomeprazole Magnesium | 16 | $466 |
| Metoclopramide Hcl | 23 | $323 |
Paid to pharmacies, not to this prescriber.
Other gastroenterology in du Bois
- Miguel RegueiroPittsburgh$1.5M
- Adam PeytonAllentown$985K
- Shahin RahimianWaynesboro$592K
- Sandra El-HachemPittsburgh$472K
- Harshit KharaDanville$438K
- Kofi ClarkeHershey$426K
- Michael KochmanPhiladelphia$361K
- Gary LichtensteinPhiladelphia$342K
- Elie AounPittsburgh$323K
- Andrew TinsleyHershey$322K
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.