Peter Byeff, MD
Hematology & Oncology · Southington, CTNPI 1710979463
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $11,043 of the $13,092 with a category attached, or 84.3%. 9 manufacturers reported payments, led by Merck at 39.0% of the total. Reporting peaked in 2019 at $12,844 and has fallen 99.6% since, to $47 in 2025.
Across 22 payments — averaging $595.11 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$5K
- Bristol Myers Squibb$4K
- AstraZeneca$3K
- Johnson & Johnson$142
- Dendreon Pharmaceuticals LLC$134
- Jazz Pharmaceuticals Inc.$48
- plus $70 from 3 others
Across 65 payments — averaging $4606.33 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Bristol Myers Squibb$139K
- Amgen$39K
- AstraZeneca$27K
- Takeda Pharmaceuticals U.S.A., Inc.$21K
- Epizyme, Inc.$20K
- E.r. Squibb & Sons, L.L.C.$19K
- plus $35K from 4 others
What the payments were for
- Consulting fees$11,04384%
- Travel & lodging$1,25110%
- Food & beverage$7296%
- Education$711%
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 |
|---|---|---|
| Merck | 2 | $5,100 |
| Bristol Myers Squibb | 5 | $4,217 |
| AstraZeneca | 5 | $3,382 |
| Johnson & Johnson | 1 | $142 |
| Dendreon Pharmaceuticals LLC | 2 | $134 |
| Jazz Pharmaceuticals Inc. | 3 | $48 |
| Array Biopharma Inc | 2 | $47 |
| Gilead | 1 | $12 |
| Pfizer | 1 | $11 |
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.
- Luspatercept$4,217
- CALQUENCE$3,329
- Monarch Platform$142
- PROVENGE$115
How this compares
$13,092 in reported general payments places this provider in the 75th percentile of 163 hematology & oncology providers in Connecticut.
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 |
|---|---|---|
| RevlimidLenalidomide | 54 | $817,906 |
| PomalystPomalidomide | 30 | $698,201 |
| IbrancePalbociclib | 26 | $417,639 |
| CabometyxCabozantinib S-Malate | 11 | $222,244 |
| CalquenceAcalabrutinib Maleate | 12 | $201,124 |
| BosulifBosutinib | 11 | $130,600 |
| Abiraterone Acetate | 31 | $104,944 |
| EliquisApixaban | 65 | $85,120 |
| XareltoRivaroxaban | 33 | $54,759 |
| NivestymFilgrastim-Aafi | 13 | $53,158 |
| Imatinib Mesylate | 28 | $9,819 |
| Deferasirox | 13 | $8,256 |
| Oxycodone Hcl | 134 | $5,757 |
| Lidocaine | 12 | $1,810 |
| Potassium Chloride | 57 | $1,266 |
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 |
|---|---|---|
| Bristol Myers SquibbRevlimid | $4,217 | $817,90654 claims |
| PfizerIbrance, Bosulif, Eliquis, Nivestym | $11 | $686,517115 claims |
| AstraZenecaCalquence | $3,382 | $201,12412 claims |
| Johnson & JohnsonXarelto | $142 | $54,75933 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 163 hematology & oncology providers in Connecticut.
Other hematology & oncology in Southington
- Amer ZeidanNew Haven$807K
- Biree AndemariamFarmington$646K
- Paul WeinsteinStamford$288K
- Walid ShaibNew Haven$217K
- Madhavi GorusuHartford$207K
- Dinesh KapurNorwich$201K
- Scott HuntingtonNew Haven$163K
- Nataliya UbohaNew Haven$124K
- Michael CecchiniNew Haven$103K
- Justine RyuOrange$83K
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.