Nanlong Liu, MD
Gastroenterology · Louisville, KYNPI 1619395977
Payments from drug & device makers
What this record shows
This record is dominated by grants: $25,000 of the $30,746 with a category attached, or 81.3%. Boston Scientific accounts for 84.9% of it on its own, with 18 other manufacturers making up the rest. Reporting peaked in 2021 at $25,142 and has fallen 96.7% since, to $823 in 2025. Among gastroenterology clinicians in KY with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 105 payments — averaging $292.82 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boston Scientific$26K
- Apollo Endosurgery US Inc$967
- AbbVie$833
- Medtronic$501
- Johnson & Johnson$257
- Ardelyx, Inc.$246
- plus $2K from 13 others
What the payments were for
- Grants$25,00081%
- Travel & lodging$5992%
- Food & beverage$5,04716%
- Education$990%
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 |
|---|---|---|
| Boston Scientific | 35 | $26,094 |
| Apollo Endosurgery US Inc | 8 | $967 |
| AbbVie | 30 | $833 |
| Medtronic | 5 | $501 |
| Johnson & Johnson(2 entities) | 3 | $257 |
| Ardelyx, Inc. | 4 | $246 |
| Steris Corporation | 2 | $239 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 2 | $214 |
| Novo Nordisk | 3 | $192 |
| 3-d Matrix, Inc. | 1 | $160 |
| Micro-tech Endoscopy USA, Inc. | 2 | $156 |
| Olympus America Inc. | 2 | $148 |
| Cook Medical LLC | 2 | $131 |
| E.r. Squibb & Sons, L.L.C. | 1 | $130 |
| Sanofi | 1 | $125 |
| Janssen Scientific Affairs, LLC | 1 | $121 |
| Dova Pharmaceuticals | 1 | $107 |
| ERBE USA Inc | 1 | $100 |
| Gilead | 1 | $25 |
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.
- GENERAL - BILIARY DEVICES$25,142
- OverStitch Endoscopic Suturing System$746
- X-Tack Endoscopic HeliX Tacking System$294
- EXALT Model D$250
- TRUFREEZE$217
- XIFAXAN$214
- IBSRELA$184
- PillCam$165
- GI Genius$153
- EVIS EXERA III DUODENOVIDEOSCOPE$139
- DISPOSABLE GRASPING FORCEPS$139
- Tremfya$139
- DAT Closure Device$132
- ZEPOSIA$130
- APOLLO ESG System$126
- DUPIXENT$125
- STELARA$121
- Humira$115
- GENERAL - THERAPIES$112
- Creon$109
How this compares
$30,746 in reported general payments places this provider in the 90th percentile of 207 gastroenterology providers in Kentucky.
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 |
|---|---|---|
| XifaxanRifaximin | 14 | $45,702 |
| CreonLipase/Protease/Amylase | 17 | $25,344 |
| Peg 3350-ElectrolyteSodium Chloride/Nahco3/Kcl/Peg | 79 | $1,708 |
| Pantoprazole Sodium | 37 | $531 |
| Omeprazole | 14 | $170 |
| Ciprofloxacin Hcl | 13 | $31 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLCXifaxan | $214 | $45,70214 claims |
| AbbVieCreon | $833 | $25,34417 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 90th percentile of 207 gastroenterology providers in Kentucky.
Other gastroenterology in Louisville
- Gerald DrydenLouisville$2.1M
- Matthew CaveLouisville$340K
- Michael KreaseLouisville$322K
- Sunana SohiLouisville$220K
- Jeffrey TuvlinLouisville$202K
- Stephen McClaveLouisville$124K
- Ashutosh BarveLouisville$43K
- Thomas AbellLouisville$36K
- Craig McClainLouisville$22K
- John HorlanderLouisville$18K
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.