Bassel Kisso, MD
Gastroenterology · Tucson, AZNPI 1093918302
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 98.0% of the total across 530 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 36 manufacturers reported payments, led by AbbVie at 25.7% of the total. 2025 is the largest year on record at $2,433, 3.2 times the $762 reported in 2019.
Across 530 payments — averaging $20.10 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$3K
- Johnson & Johnson$2K
- Takeda Pharmaceuticals U.S.A., Inc.$851
- Bristol Myers Squibb$725
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$568
- Gilead$461
- plus $4K from 30 others
Across 210 payments — averaging $10,783 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Braintree Laboratories, Inc.$1.7M
- Bristol Myers Squibb$213K
- Genentech, Inc.$153K
- Janssen Research & Development, LLC$68K
- Boehringer Ingelheim International GmbH$37K
- Bausch Health US, LLC$28K
- plus $19K from 3 others
What the payments were for
- Food & beverage$10,44198%
- Education$2132%
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 | 139 | $2,740 |
| Johnson & Johnson(2 entities) | 68 | $1,618 |
| Takeda Pharmaceuticals U.S.A., Inc. | 39 | $851 |
| Bristol Myers Squibb | 45 | $725 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 37 | $568 |
| Gilead | 33 | $461 |
| Pfizer | 15 | $385 |
| Sanofi | 10 | $349 |
| Ardelyx, Inc. | 9 | $228 |
| Lilly USA, LLC | 6 | $218 |
| Regeneron Healthcare Solutions, Inc. | 8 | $216 |
| Intercept Pharmaceuticals, Inc. | 11 | $194 |
| E.r. Squibb & Sons, L.L.C. | 2 | $187 |
| Nestle Healthcare Nutrition Inc. | 22 | $177 |
| Ferring Pharmaceuticals Inc. | 10 | $175 |
| Medtronic | 1 | $174 |
| Aimmune Therapeutics, Inc. | 18 | $172 |
| QOL Medical, LLC | 11 | $159 |
| Mallinckrodt Hospital Products Inc. | 1 | $146 |
| Ironwood Pharmaceuticals, Inc | 8 | $137 |
| Braintree Laboratories, Inc. | 6 | $82 |
| Phathom Pharmaceuticals, Inc. | 4 | $80 |
| Merck | 4 | $63 |
| Madrigal Pharmaceuticals | 2 | $63 |
| Evoke Pharma, Inc. | 3 | $58 |
| Ipsen Biopharmaceuticals, Inc | 2 | $57 |
| Alnylam Pharmaceuticals Inc. | 2 | $55 |
| Celltrion USA Inc. | 3 | $52 |
| Shionogi Inc | 3 | $51 |
| Ambu Inc. | 1 | $50 |
| Abbott | 1 | $48 |
| Boston Scientific | 2 | $34 |
| Biogen | 1 | $33 |
| Novo Nordisk | 1 | $21 |
| Redhill Biopharma Inc. | 1 | $15 |
| Alfasigma USA, Inc. | 1 | $12 |
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
$10,653 in reported general payments places this provider in the 75th percentile of 355 gastroenterology providers in Arizona.
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(Cf) PenAdalimumab | 11 | $149,252 |
| LinzessLinaclotide | 39 | $53,591 |
| Mesalamine | 19 | $8,163 |
| SutabSod Sulf/Pot Chloride/Mag Sulf | 29 | $4,791 |
| SuflavePeg 3350/Sod Sulf,chlr/Pot/Mag | 20 | $2,505 |
| Famotidine | 183 | $2,158 |
| Omeprazole | 170 | $2,031 |
| CholestyramineCholestyramine (With Sugar) | 13 | $1,601 |
| Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl | 87 | $1,420 |
| Tetracycline Hcl | 11 | $1,349 |
| Pantoprazole Sodium | 166 | $1,256 |
| Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates | 13 | $839 |
| Dicyclomine Hcl | 23 | $809 |
| Peg-3350 And ElectrolytesPeg3350/Sod Sulf,bicarb,cl/Kcl | 42 | $642 |
| Peg 3350-ElectrolyteSodium Chloride/Nahco3/Kcl/Peg | 17 | $318 |
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 | $2,740 | $53,59139 claims |
| Braintree Laboratories, Inc.Sutab, Suflave | $82 | $7,29749 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 75th percentile of 355 gastroenterology providers in Arizona.
Other gastroenterology in Tucson
- Joel BrillParadise Valley$847K
- Daniel MelineScottsdale$795K
- David FleischerScottsdale$410K
- Neil SharmaGilbert$405K
- Chirag TrivediSun City$400K
- David LeffMesa$377K
- Pankaj PasrichaScottsdale$304K
- Norio FukamiScottsdale$215K
- Toufic KachaamyScottsdale$210K
- Christina HaScottsdale$198K
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.