Willis Parsons, MD
Gastroenterology · Arlington Heights, ILNPI 1972578698
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (46.1%), consulting fees and education — rather than concentrated in one kind of arrangement. 33 manufacturers reported payments, led by Cook Incorporated at 27.7% of the total. 2025 is the largest year on record at $47,935, 2.1 times the $22,479 reported in 2019. Among gastroenterology clinicians in IL with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 210 payments — averaging $726.48 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Cook Incorporated$42K
- Fujifilm Healthcare Americas Corporation$38K
- Cook Medical LLC$33K
- Wilson Cook Medical Incorporated$21K
- GI Supply, Inc.$8K
- Laborie Medical Technologies Corp.$3K
- plus $6K from 27 others
What the payments were for
- Consulting fees$41,90027%
- Speaking & faculty fees$70,32046%
- Grants$1,0001%
- Food & beverage$10,5227%
- Education$28,80019%
- Entertainment$190%
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 |
|---|---|---|
| Cook Incorporated | 4 | $42,320 |
| Fujifilm Healthcare Americas Corporation | 10 | $38,460 |
| Cook Medical LLC | 46 | $32,798 |
| Wilson Cook Medical Incorporated | 4 | $21,066 |
| GI Supply, Inc. | 2 | $8,278 |
| Laborie Medical Technologies Corp. | 5 | $3,488 |
| Boston Scientific | 14 | $1,153 |
| Ambu Inc. | 11 | $898 |
| Conmed Corporation | 11 | $665 |
| Creo Medical Inc. | 6 | $488 |
| AbbVie(2 entities) | 14 | $371 |
| Medtronic | 9 | $350 |
| Olympus America Inc. | 5 | $343 |
| Regeneron Healthcare Solutions, Inc. | 7 | $225 |
| Endogastric Solutions, Inc | 5 | $217 |
| Takeda Pharmaceuticals U.S.A., Inc. | 11 | $197 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 8 | $169 |
| Sanofi | 5 | $156 |
| Medical Device Business Services, Inc. | 3 | $148 |
| Mauna Kea Technologies, Inc. | 4 | $126 |
| Micro-tech Endoscopy USA, Inc. | 1 | $107 |
| Ipsen Biopharmaceuticals, Inc | 3 | $103 |
| Braintree Laboratories, Inc. | 4 | $74 |
| Steris Corporation | 1 | $67 |
| Celltrion USA Inc. | 3 | $64 |
| Amgen | 3 | $52 |
| Phathom Pharmaceuticals, Inc. | 3 | $39 |
| Johnson & Johnson | 2 | $31 |
| UCB, Inc. | 2 | $25 |
| Servier Pharmaceuticals LLC | 1 | $25 |
| Covidien LP | 1 | $23 |
| Exact Sciences | 1 | $20 |
| Alfasigma USA, Inc. | 1 | $14 |
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.
- FUJIFILM$38,132
- FUSION$30,144
- ECHOTIP INSIGHT$22,600
- Cook Medical Endoscopic Ultrasound$19,200
- Cook Medical Endoscopy$10,600
- Fusion Quattro$10,584
- Hemospray$635
- CONMED BILIARY$353
- AXIOS$337
- Cook Medical Biliary$216
- Speedboat Ultraslim (SB1L)$201
- GENERAL - BILIARY DEVICES$191
- D.A.S.H.$166
- Single Use Electrosurgical Knife KD-655$166
- GASTROINTESTINAL VIDEOSCOPE$166
- EVIS X1 VIDEO SYSTEM CENTER$166
- EndoClot SIS$166
- DISPOSABLE TRIPLE LUMEN SPHINCTEROTOME$150
- Single Use Biliary Stent V$150
- Cook Medical Hemostasis$143
How this compares
$152,561 in reported general payments places this provider in the 95th percentile of 787 gastroenterology providers in Illinois.
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 |
|---|---|---|
| CreonLipase/Protease/Amylase | 11 | $48,090 |
| Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates | 98 | $6,496 |
| Sucralfate | 17 | $1,570 |
| Pantoprazole Sodium | 146 | $1,426 |
| Omeprazole | 73 | $1,146 |
| Esomeprazole Magnesium | 16 | $328 |
| Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl | 19 | $286 |
| Peg-3350 And ElectrolytesPeg3350/Sod Sulf,bicarb,cl/Kcl | 14 | $219 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 36 | $109 |
| Levofloxacin | 28 | $53 |
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 |
|---|---|---|
| AbbVieCreon | $371 | $48,09011 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 95th percentile of 787 gastroenterology providers in Illinois.
Other gastroenterology in Arlington Heights
- David KimArlington Heights$119K
- David RubinChicago$1.5M
- Stephen HanauerChicago$1.4M
- Steven FlammChicago$1.3M
- Amar NaikDes Plaines$1.2M
- Darren BrennerChicago$1.1M
- Jonathan RosenbergGurnee$1M
- Daksesh PatelEvanston$745K
- Russell CohenChicago$690K
- Parambir DulaiChicago$668K
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.