John Chafos, MD
Internal Medicine · Green Brook, NJNPI 1871673830
Payments from drug & device makers
Across 126 payments — averaging $13.77 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novo Nordisk$406
- AbbVie$220
- Pfizer$137
- GSK$115
- AstraZeneca$101
- Genentech USA, Inc.$82
- plus $674 from 23 others
What the payments were for
- Food & beverage$1,66596%
- Education$704%
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 |
|---|---|---|
| Novo Nordisk | 33 | $406 |
| AbbVie(2 entities) | 13 | $220 |
| Pfizer | 10 | $137 |
| GSK | 9 | $115 |
| AstraZeneca | 7 | $101 |
| Genentech USA, Inc. | 6 | $82 |
| Merck | 6 | $78 |
| Amgen(2 entities) | 5 | $69 |
| Boehringer Ingelheim | 4 | $57 |
| Amarin Pharma, Inc. | 4 | $56 |
| Almatica Pharma LLC | 3 | $44 |
| Teva Pharmaceuticals USA, Inc. | 3 | $43 |
| Avanir Pharmaceuticals, Inc. | 3 | $41 |
| Novartis | 2 | $33 |
| Bausch Health US, LLC | 2 | $27 |
| Abbott | 2 | $27 |
| Lilly USA, LLC | 2 | $25 |
| Exact Sciences | 1 | $21 |
| Astellas Pharma US Inc | 1 | $20 |
| Kowa Pharmaceuticals America, Inc. | 1 | $15 |
| Sanofi-aventis U.S. LLC | 1 | $14 |
| Johnson & Johnson | 1 | $14 |
| Jazz Pharmaceuticals Inc. | 1 | $14 |
| Nabriva Therapeutics, PLC | 1 | $13 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $13 |
| Shire North American Group Inc | 1 | $13 |
| Indivior Inc. | 1 | $12 |
| Otsuka America Pharmaceutical, Inc. | 1 | $12 |
| E.r. Squibb & Sons, L.L.C. | 1 | $11 |
How this compares
$1,735 in reported general payments places this provider in the 75th percentile of 4,032 internal medicine providers in New Jersey.
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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| OzempicSemaglutide | 81 | $132,277 |
| EliquisApixaban | 77 | $87,343 |
| MounjaroTirzepatide | 18 | $27,632 |
| JanumetSitagliptin Phos/Metformin Hcl | 23 | $21,797 |
| XareltoRivaroxaban | 12 | $10,477 |
| EntrestoSacubitril/Valsartan | 13 | $7,522 |
| Colesevelam Hcl | 14 | $3,116 |
| Fluticasone-SalmeterolFluticasone Propion/Salmeterol | 11 | $2,924 |
| Cefpodoxime Proxetil | 37 | $2,657 |
| Celecoxib | 50 | $2,267 |
| Cefdinir | 125 | $2,130 |
| Metoprolol Succinate | 126 | $2,012 |
| Atorvastatin Calcium | 166 | $1,833 |
| Albuterol Sulfate HfaAlbuterol Sulfate | 44 | $1,753 |
| Rosuvastatin Calcium | 152 | $1,732 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| Novo NordiskOzempic | $406 | $132,27781 claims |
| PfizerEliquis | $137 | $87,34377 claims |
| Lilly USA, LLCMounjaro | $25 | $27,63218 claims |
| MerckJanumet | $78 | $21,79723 claims |
| Johnson & JohnsonXarelto | $14 | $10,47712 claims |
| NovartisEntresto | $33 | $7,52213 claims |
| AbbVieSynthroid | $220 | $1,24012 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 75th percentile of 4,032 internal medicine providers in New Jersey.
Other internal medicine in Green Brook
- Sanjiv SharmaToms River$33.9M
- Jeffrey CarsonNew Brunswick$13.8M
- Samer HaddadHamilton$6.8M
- Magdy ShenoudaWall$3.7M
- Samar HameedLivingston$3.6M
- Jane RohlfTrenton$2.7M
- Mohammed NisarEdison$2.6M
- Michael CasserNew Milford$2.2M
- Sumitha ReddyHamilton$2M
- Helio PedroNewark$1.8M
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.