GREGORY ISENBERG
Allopathic & Osteopathic Physicians|Internal Medicine HARTFORD, CT NPI 1801909643
Browse related groups: Allopathic & Osteopathic Physicians|Internal Medicine CT Novo Nordisk AS All categories
General Payments — all program years on this page
$7,693.41
- Category: General Payments
- Program years: PY2018–2020
- Record count: 225
- As of (CMS publication): 2026-01-23
Latest program year (PY2020): $652.85 across 24 records · disputed records: 0
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How this figure is calculated
- The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. Nothing is estimated, weighted, or combined across categories.
- General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
- Featured-page threshold (a presentation gate, not a judgment): records>=3 OR total>=100 (all years).
- Methodology & Data — sourcing, labeling, and limitations.
By nature of payment
Latest program year (PY2020) · sorted by reported total.
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $652.85 | 24 |
By paying entity
Latest program year (PY2020) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| Novo Nordisk AS | $178.84 | 4 |
| Lilly USA, LLC | $132.21 | 4 |
| Janssen Pharmaceuticals, Inc | $129.50 | 2 |
| Acerta Pharma LLC | $80.45 | 5 |
| SANOFI-AVENTIS U.S. LLC | $30.57 | 2 |
| Astellas Pharma US Inc | $30.24 | 2 |
| Kowa Pharmaceuticals America, Inc. | $25.14 | 2 |
| IRONWOOD PHARMACEUTICALS, INC | $17.29 | 1 |
| Merck Sharp & Dohme Corporation | $16.05 | 1 |
| Allergan Inc. | $12.56 | 1 |
By program year
Records — PY2020 (24)
Provenance & corrections
- Dataset: CMS Open Payments — General Payments
- Source: CMS Open Payments dataset (bulk file)
- Publisher of source data: Centers for Medicare & Medicaid Services
- Generated from: OP_DTL_GNRL_PGYR2020_P01232026_01102026.csv
One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.
Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.