Matthew Greiner
Surgical · Knoxville, TNNPI 1942238175
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 112 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 23 manufacturers reported payments, led by AbbVie at 35.4% of the total.
Across 112 payments — averaging $18.99 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$753
- QOL Medical, LLC$385
- Sanofi$257
- Nestle Healthcare Nutrition Inc.$159
- AstraZeneca$68
- Takeda Pharmaceuticals U.S.A., Inc.$65
- plus $440 from 17 others
What the payments were for
- Food & beverage$2,127100%
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 | 51 | $753 |
| QOL Medical, LLC | 16 | $385 |
| Sanofi | 7 | $257 |
| Nestle Healthcare Nutrition Inc. | 10 | $159 |
| AstraZeneca(2 entities) | 2 | $68 |
| Takeda Pharmaceuticals U.S.A., Inc. | 4 | $65 |
| Regeneron Healthcare Solutions, Inc. | 2 | $48 |
| Medtronic | 2 | $41 |
| Celltrion USA Inc. | 2 | $40 |
| Axsome Therapeutics, Inc. | 1 | $35 |
| Mirum Pharmaceuticals, Inc. | 1 | $33 |
| Ultragenyx Pharmaceutical Inc. | 1 | $31 |
| Coloplast | 2 | $28 |
| Ipsen Biopharmaceuticals, Inc | 1 | $26 |
| Vivus LLC | 2 | $24 |
| Novo Nordisk | 1 | $19 |
| Madrigal Pharmaceuticals | 1 | $18 |
| Phadia US Inc. | 1 | $18 |
| Genentech USA, Inc. | 1 | $18 |
| Albireo Pharma, Inc. | 1 | $17 |
| Sandoz | 1 | $16 |
| Pfizer | 1 | $14 |
| Johnson & Johnson | 1 | $13 |
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.
- DUPIXENT$115
How this compares
$2,127 in reported general payments places this provider in the 85th percentile of 206 surgical providers in Tennessee.
Other surgical in Knoxville
- Jennie ClarkKnoxville$5K
- Christopher DalbyKnoxville$4K
- Kristen PriceKnoxville$3K
- Zachary SwansonKnoxville$2K
- Cody FieldsKnoxville$2K
- Cynthia HaneyKnoxville$2K
- Adam BuzzerdKnoxville$2K
- Sara KaniperKnoxville$1K
- Jodi JansKnoxville$1K
- Robert AustinKnoxville$1K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.