Brett van Leer Greenberg, MD
Gastroenterology · Summerville, SCNPI 1871911867
Payments from drug & device makers
Across 396 payments — averaging $2816.72 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Genentech, Inc.$621K
- Boehringer Ingelheim International GmbH$273K
- Bausch Health US, LLC$55K
- Regeneron$46K
- AbbVie$39K
- Takeda Pharmaceuticals U.S.A., Inc.$38K
- plus $44K from 26 others
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 |
|---|---|---|
| Genentech, Inc. | 59 | $621,190 |
| Boehringer Ingelheim International GmbH | 62 | $272,547 |
| Bausch Health US, LLC | 34 | $55,021 |
| Regeneron | 13 | $46,030 |
| AbbVie | 60 | $38,512 |
| Takeda Pharmaceuticals U.S.A., Inc. | 33 | $38,353 |
| Phathom Pharmaceuticals, Inc. | 42 | $30,759 |
| Sanofi | 19 | $9,694 |
| Intra-sana Laboratories | 2 | $900 |
| Redhill Biopharma Inc. | 5 | $577 |
| Janssen Scientific Affairs, LLC | 2 | $247 |
| Medtronic | 3 | $210 |
| Johnson & Johnson | 6 | $193 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 10 | $172 |
| Regeneron Healthcare Solutions, Inc. | 2 | $166 |
| Gilead | 5 | $125 |
| Pfizer | 6 | $119 |
| Nestle Healthcare Nutrition Inc. | 5 | $102 |
| Braintree Laboratories, Inc. | 5 | $68 |
| Boston Scientific | 3 | $59 |
| Celltrion USA Inc. | 3 | $53 |
| Novo Nordisk | 2 | $51 |
| Daiichi Sankyo Inc. | 2 | $49 |
| Axonics, Inc. | 3 | $46 |
| Bristol Myers Squibb | 2 | $32 |
| Ferring Pharmaceuticals Inc. | 1 | $27 |
| Covidien LP | 1 | $27 |
| QOL Medical, LLC | 1 | $26 |
| Merck | 2 | $25 |
| Alnylam Pharmaceuticals Inc. | 1 | $16 |
| Ironwood Pharmaceuticals, Inc | 1 | $15 |
| Cook Medical LLC | 1 | $11 |
How this compares
$1,115,420 in reported general payments places this provider in the 95th percentile of 259 gastroenterology providers in South Carolina.
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.
Other gastroenterology in Summerville
- Chuma ObinemeSummerville$11K
- James KoppAnderson$2.3M
- Erin ForsterCharleston$2M
- Suzy KimGreenville$1.5M
- Narayanachar MuraliOrangeburg$1.4M
- Edward KimbroughColumbia$1M
- Gary AbramsGreenville$925K
- Mark DeleggeCharleston$578K
- Matthew BarnesGreenville$565K
- Brenda HoffmanCharleston$433K
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.