Erik Thyssen, MD
Gastroenterology · Creve Coeur, MONPI 1750495099
Payments from drug & device makers
Across 419 payments — averaging $18.47 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$3K
- Johnson & Johnson$1K
- Sanofi$547
- Pfizer$513
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$453
- Bristol Myers Squibb$226
- plus $2K from 26 others
What the payments were for
- Food & beverage$7,63099%
- Education$841%
- Gifts$150%
- Entertainment$120%
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 | 186 | $2,962 |
| Johnson & Johnson | 66 | $1,421 |
| Sanofi | 13 | $547 |
| Pfizer | 34 | $513 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 28 | $453 |
| Bristol Myers Squibb | 14 | $226 |
| Merck | 7 | $178 |
| Ironwood Pharmaceuticals, Inc | 11 | $170 |
| Lilly USA, LLC | 6 | $139 |
| UCB, Inc. | 8 | $136 |
| Dova Pharmaceuticals | 2 | $132 |
| Takeda Pharmaceuticals U.S.A., Inc. | 11 | $128 |
| Phathom Pharmaceuticals, Inc. | 2 | $127 |
| E.r. Squibb & Sons, L.L.C. | 1 | $100 |
| Romark Laboratories, LC | 5 | $90 |
| Regeneron Healthcare Solutions, Inc. | 2 | $54 |
| Madrigal Pharmaceuticals | 2 | $49 |
| Shionogi Inc | 2 | $42 |
| Redhill Biopharma Inc. | 3 | $40 |
| Micro-tech Endoscopy USA, Inc. | 2 | $39 |
| Braintree Laboratories, Inc. | 2 | $36 |
| Organon | 1 | $27 |
| Amgen | 1 | $19 |
| Ardelyx, Inc. | 1 | $18 |
| Sandoz | 1 | $16 |
| Aimmune Therapeutics, Inc. | 1 | $16 |
| QOL Medical, LLC | 1 | $15 |
| Daiichi Sankyo Inc. | 1 | $14 |
| Intercept Pharmaceuticals, Inc. | 1 | $13 |
| Mauna Kea Technologies, Inc. | 1 | $12 |
| Nestle Healthcare Nutrition Inc. | 1 | $11 |
| Gastrogpo, LLC | 2 | $0 |
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
$7,740 in reported general payments places this provider in the 70th percentile of 374 gastroenterology providers in Missouri.
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 |
|---|---|---|
| StelaraUstekinumab | 23 | $552,462 |
| CreonLipase/Protease/Amylase | 20 | $47,548 |
| LinzessLinaclotide | 52 | $39,894 |
| PlenvuPeg3350/Sod Sul/Nacl/Kcl/Asb/C | 118 | $16,881 |
| Mesalamine | 23 | $15,878 |
| TrulancePlecanatide | 17 | $14,554 |
| MotegrityPrucalopride Succinate | 25 | $13,039 |
| Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates | 191 | $12,432 |
| Budesonide EcBudesonide | 38 | $5,727 |
| SutabSod Sulf/Pot Chloride/Mag Sulf | 22 | $3,546 |
| Mesalamine ErMesalamine | 17 | $3,511 |
| Methscopolamine Bromide | 15 | $3,504 |
| Budesonide DrBudesonide | 28 | $3,266 |
| Omeprazole | 195 | $1,881 |
| Sodium Chloride0.9 % Sodium Chloride | 20 | $1,582 |
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 |
|---|---|---|
| Johnson & JohnsonStelara | $1,421 | $552,46223 claims |
| AbbVieCreon, Linzess | $2,962 | $87,44272 claims |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLCPlenvu, Trulance | $453 | $31,435135 claims |
| Takeda Pharmaceuticals U.S.A., Inc.Motegrity | $128 | $13,03925 claims |
| Braintree Laboratories, Inc.Sutab | $36 | $3,54622 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 374 gastroenterology providers in Missouri.
Other gastroenterology in Creve Coeur
- Bradley FreilichKansas City$4.5M
- Parakkal DeepakSaint Louis$2M
- Steven FernSullivan$1.4M
- Gregory SayukSaint Louis$1.1M
- Katie SchroederSaint Louis$920K
- Kevin KorenblatSaint Louis$857K
- Christopher BartalosLees Summit$815K
- Bradley AndersonColumbia$776K
- Brent Neuschwander-TetriSaint Louis$729K
- David AlpersSaint Louis$616K
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.