John Clemmons, MD
Gastroenterology · Houston, TXNPI 1518997477
Payments from drug & device makers
Across 483 payments — averaging $18.20 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$3K
- AbbVie$2K
- Johnson & Johnson$828
- Gilead$801
- Pfizer$555
- Takeda Pharmaceuticals U.S.A., Inc.$347
- plus $1K from 24 others
What the payments were for
- Food & beverage$8,58898%
- Education$2022%
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 |
|---|---|---|
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 248 | $3,330 |
| AbbVie(2 entities) | 73 | $1,503 |
| Johnson & Johnson | 29 | $828 |
| Gilead | 28 | $801 |
| Pfizer | 23 | $555 |
| Takeda Pharmaceuticals U.S.A., Inc. | 17 | $347 |
| Evoke Pharma, Inc. | 5 | $185 |
| Ferring Pharmaceuticals Inc. | 6 | $151 |
| Redhill Biopharma Inc. | 9 | $141 |
| Mallinckrodt Hospital Products Inc. | 1 | $130 |
| Phathom Pharmaceuticals, Inc. | 6 | $126 |
| Boston Scientific | 4 | $92 |
| Nestle Healthcare Nutrition Inc. | 4 | $87 |
| Novo Nordisk | 4 | $79 |
| Vivus LLC | 3 | $54 |
| Amgen(2 entities) | 2 | $41 |
| Intercept Pharmaceuticals, Inc. | 3 | $40 |
| Arbor Pharmaceuticals, Inc. | 3 | $38 |
| Bristol Myers Squibb | 2 | $35 |
| Ardelyx, Inc. | 2 | $31 |
| Lilly USA, LLC | 1 | $31 |
| GSK | 2 | $30 |
| Ipsen Biopharmaceuticals, Inc | 1 | $26 |
| Ironwood Pharmaceuticals, Inc | 1 | $22 |
| Braintree Laboratories, Inc. | 1 | $21 |
| Napo Pharmaceuticals Inc | 1 | $19 |
| Conmed Corporation | 1 | $17 |
| AstraZeneca | 1 | $13 |
| Olympus America Inc. | 1 | $12 |
| QOL Medical, LLC | 1 | $5 |
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
$8,790 in reported general payments places this provider in the 70th 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 |
|---|---|---|
| Humira PenAdalimumab | 14 | $95,361 |
| Xeljanz XrTofacitinib Citrate | 12 | $68,293 |
| LinzessLinaclotide | 41 | $42,138 |
| MounjaroTirzepatide | 22 | $25,557 |
| JanuviaSitagliptin Phosphate | 21 | $24,266 |
| Mesalamine | 47 | $20,578 |
| ZenpepLipase/Protease/Amylase | 15 | $20,088 |
| Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates | 232 | $13,791 |
| TrulancePlecanatide | 11 | $11,833 |
| XareltoRivaroxaban | 11 | $11,437 |
| Dexlansoprazole DrDexlansoprazole | 26 | $8,495 |
| EdarbyclorAzilsartan Med/Chlorthalidone | 16 | $7,363 |
| Pantoprazole Sodium | 497 | $5,244 |
| Dicyclomine Hcl | 132 | $4,603 |
| Sucralfate | 64 | $4,117 |
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 |
|---|---|---|
| AbbVieLinzess | $1,503 | $42,13841 claims |
| Lilly USA, LLCMounjaro | $31 | $25,55722 claims |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLCTrulance | $3,330 | $11,83311 claims |
| Johnson & JohnsonXarelto | $828 | $11,43711 claims |
| Arbor Pharmaceuticals, Inc.Edarbyclor | $38 | $7,36316 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 70th percentile of 1,350 gastroenterology providers in Texas.
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.