Gregory Isenberg
Internal Medicine · Hartford, CTNPI 1801909643
Payments from drug & device makers
Across 122 payments — averaging $34.80 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Johnson & Johnson$784
- AstraZeneca$623
- Novo Nordisk$545
- AbbVie$471
- Sanofi-aventis U.S. LLC$233
- Astellas Pharma US Inc$226
- plus $1K from 15 others
What the payments were for
- Food & beverage$4,246100%
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 |
|---|---|---|
| Johnson & Johnson | 18 | $784 |
| AstraZeneca | 20 | $623 |
| Novo Nordisk | 15 | $545 |
| AbbVie(2 entities) | 18 | $471 |
| Sanofi-aventis U.S. LLC | 8 | $233 |
| Astellas Pharma US Inc | 8 | $226 |
| Lilly USA, LLC | 9 | $197 |
| Abbott | 1 | $149 |
| Amgen | 2 | $139 |
| Novartis | 2 | $138 |
| Amarin Pharma, Inc. | 1 | $135 |
| Mylan Specialty L.p. | 1 | $125 |
| Boehringer Ingelheim | 1 | $125 |
| Boston Scientific | 1 | $118 |
| Merck | 4 | $68 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 4 | $57 |
| Kowa Pharmaceuticals America, Inc. | 3 | $38 |
| Pfizer | 2 | $22 |
| Arbor Pharmaceuticals, Inc. | 1 | $18 |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $18 |
| Ironwood Pharmaceuticals, Inc | 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.
- Ozempic$362
- FARXIGA$361
- INVOKANA$342
- XARELTO$235
- Axium INS DRG IPG$149
- Vascepa$135
- Yupelri$125
- VRAYLAR$125
- MYRBETRIQ$125
- SOLIQUA 100/33$125
- JARDIANCE$125
- Repatha$122
- ENTRESTO$122
- GENERAL ERECTILE DYSFUNCTION$118
How this compares
$4,246 in reported general payments places this provider in the 90th percentile of 2,067 internal medicine providers in Connecticut.
Other internal medicine in Hartford
- Mandeep KumarHartford$73K
- Joseph SouferWaterbury$21.5M
- David RadinStamford$7M
- Steven RyderWestport$3.9M
- Nancy BrownNew Haven$2.8M
- Charles MontanoCromwell$2.8M
- Arthur DecillisMadison$1M
- Michelle MallitzTrumbull$971K
- Allen HellerWoodbridge$758K
- Gary BlickNorwalk$717K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.