Covered recipient · General Payments record
GREG J GERSTNER
Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology
General Payments · PY2018–2023
$3,165.51
- Reported across 189 records
- CMS publication 2026-01-23
Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.
How these totals are 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
PY2023 · sorted by reported total
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $160.90 | 8 |
By paying entity
PY2023 · sorted by reported total
| Paying entity | Amount | Records |
|---|---|---|
| SEAGEN INC. | $38.56 | 2 |
| Regeneron Healthcare Solutions, Inc. | $32.70 | 1 |
| ABBVIE INC. | $26.82 | 1 |
| EISAI INC. | $16.96 | 1 |
| Merck Sharp & Dohme Corporation | $16.83 | 1 |
| PFIZER INC. | $15.25 | 1 |
| NOVARTIS PHARMACEUTICALS CORPORATION | $13.78 | 1 |
By program year
All program years on this page · sorted by year
Payment records · PY2023 (8)
Sorted by paying entity, then date · as published by CMS
| Paying entity | Amount | Date | Nature of payment | Dispute status | Published | Record ID | Source |
|---|---|---|---|---|---|---|---|
| ABBVIE INC. | $26.82 | 01/20/2023 | Food and Beverage | Undisputed | 01/23/2026 | 997335333 | CMS |
| Eisai Inc. | $16.96 | 01/17/2023 | Food and Beverage | Undisputed | 01/23/2026 | 1023311591 | CMS |
| Merck Sharp & Dohme LLC | $16.83 | 02/23/2023 | Food and Beverage | Undisputed | 01/23/2026 | 1048256587 | CMS |
| Novartis Pharmaceuticals Corporation | $13.78 | 01/10/2023 | Food and Beverage | Undisputed | 01/23/2026 | 992176937 | CMS |
| PFIZER INC. | $15.25 | 02/21/2023 | Food and Beverage | Undisputed | 01/23/2026 | 1049633131 | CMS |
| Regeneron Healthcare Solutions, Inc. | $32.70 | 01/05/2023 | Food and Beverage | Undisputed | 01/23/2026 | 999185331 | CMS |
| Seagen Inc. | $17.88 | 03/02/2023 | Food and Beverage | Undisputed | 01/23/2026 | 995652435 | CMS |
| Seagen Inc. | $20.68 | 03/09/2023 | Food and Beverage | Undisputed | 01/23/2026 | 995652441 | CMS |
Source & provenance
- Dataset
- CMS Open Payments — General Payments
- Publisher of source data
- Centers for Medicare & Medicaid Services
- CMS publication date
- 2026-01-23
- Program years on this page
- 2018, 2019, 2020, 2021, 2022, 2023
- Generated from
- OP_DTL_GNRL_PGYR2023_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.