JOHN G IVANOFF
Allopathic & Osteopathic Physicians|Internal Medicine|Interventional Cardiology TULSA, OK NPI 1497725857
Browse related groups: Allopathic & Osteopathic Physicians|Internal Medicine|Interventional Cardiology OK NOVARTIS PHARMACEUTICALS CORPORATION All categories
General Payments — all program years on this page
$5,481.09
- Category: General Payments
- Program years: PY2018–2024
- Record count: 255
- As of (CMS publication): 2026-01-23
Latest program year (PY2024): $1,140.89 across 51 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 (PY2024) · sorted by reported total.
| Nature of payment | Amount | Records |
|---|---|---|
| Food and Beverage | $1,140.89 | 51 |
By paying entity
Latest program year (PY2024) · sorted by reported total.
| Paying entity | Amount | Records |
|---|---|---|
| NOVARTIS PHARMACEUTICALS CORPORATION | $253.35 | 10 |
| PFIZER INC. | $109.77 | 5 |
| Amgen Inc. | $107.01 | 6 |
| Esperion Therapeutics, Inc. | $93.42 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $84.90 | 4 |
| Merck Sharp & Dohme Corporation | $81.25 | 4 |
| Acerta Pharma LLC | $72.06 | 3 |
| Abbott Laboratories | $60.17 | 3 |
| VivaQuant Inc, dba Rhythm Express | $41.80 | 1 |
| SANOFI-AVENTIS U.S. LLC | $31.13 | 1 |
| Janssen Pharmaceuticals, Inc | $30.93 | 1 |
| ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) | $28.58 | 1 |
| Regeneron Healthcare Solutions, Inc. | $28.47 | 1 |
| IMPULSE DYNAMICS (USA) INC. | $26.58 | 1 |
| Lexicon Pharmaceuticals, Inc. | $24.39 | 1 |
| ATRICURE, INC. | $18.72 | 1 |
| E.R. Squibb & Sons, L.L.C. | $18.47 | 1 |
| Philips Electronics North America Corporation | $15.83 | 1 |
| BOSTON SCIENTIFIC CORPORATION | $14.06 | 1 |
By program year
Records — PY2024 (51)
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_PGYR2024_P01232026_01102026.csv
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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.