Michael Louis, DO
Gastroenterology · Harrisonburg, VANPI 1851825145
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 48 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 19 manufacturers reported payments, led by AbbVie at 33.7% of the total. Reporting peaked in 2023 at $779 and has fallen 72.5% since, to $214 in 2025. That places this record below the midpoint for gastroenterology clinicians in VA, where the typical reported total is $3,407.
Across 48 payments — averaging $62.57 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$1K
- Takeda Pharmaceuticals U.S.A., Inc.$304
- Gilead$245
- Johnson & Johnson$194
- Nestle Healthcare Nutrition Inc.$175
- Regeneron Healthcare Solutions, Inc.$166
- plus $907 from 13 others
What the payments were for
- Food & beverage$3,003100%
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(2 entities) | 14 | $1,012 |
| Takeda Pharmaceuticals U.S.A., Inc. | 5 | $304 |
| Gilead | 2 | $245 |
| Johnson & Johnson | 2 | $194 |
| Nestle Healthcare Nutrition Inc. | 4 | $175 |
| Regeneron Healthcare Solutions, Inc. | 3 | $166 |
| Ardelyx, Inc. | 1 | $150 |
| Steris Corporation | 1 | $142 |
| Daiichi Sankyo Inc. | 1 | $125 |
| Evoke Pharma, Inc. | 1 | $122 |
| Sanofi | 1 | $81 |
| Vivus LLC | 5 | $71 |
| Napo Pharmaceuticals Inc | 1 | $63 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 2 | $37 |
| Pfizer | 1 | $35 |
| Lilly USA, LLC | 1 | $24 |
| Ironwood Pharmaceuticals, Inc | 1 | $22 |
| Fresenius Kabi USA, LLC | 1 | $18 |
| Medtronic | 1 | $17 |
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
$3,003 in reported general payments places this provider in the 45th percentile of 473 gastroenterology providers in Virginia.
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 |
|---|---|---|
| Pantoprazole Sodium | 91 | $803 |
| Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl | 25 | $373 |
| Peg-3350 And ElectrolytesPeg3350/Sod Sulf,bicarb,cl/Kcl | 13 | $183 |
| Omeprazole | 54 | $156 |
| Famotidine | 15 | $98 |
Paid to pharmacies, not to this prescriber.
Other gastroenterology in Harrisonburg
- Larry ClarkLynchburg$1.2M
- Arun SanyalRichmond$855K
- Mitchell ShiffmanNewport News$635K
- Bryan SauerCharlottesville$540K
- Michael RyanNorfolk$335K
- Brian WentworthCharlottesville$276K
- Vanessa ShamiCharlottesville$210K
- Ali SiddiquiFairfax$167K
- Michael FuchsRichmond$126K
- Michael ManetasRichmond$125K
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.