Igor Rybkin
Hematology & Oncology · Detroit, MINPI 1497965412
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $6,645 of the $6,832 with a category attached, or 97.3%. AstraZeneca accounts for 60.8% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2019 at $4,282 and has fallen 76.2% since, to $1,020 in 2021.
Across 6 payments — averaging $1138.60 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AstraZeneca$4K
- EMD Serono, Inc.$3K
- GSK$127
Across 313 payments — averaging $7771.05 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.
- Merck$1.6M
- Eli Lilly$195K
- EMD Serono, Inc.$194K
- AbbVie$141K
- Novartis$59K
- E.r. Squibb & Sons, L.L.C.$48K
- plus $197K from 9 others
What the payments were for
- Consulting fees$6,64597%
- Food & beverage$1873%
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 |
|---|---|---|
| AstraZeneca | 3 | $4,155 |
| EMD Serono, Inc. | 2 | $2,550 |
| GSK | 1 | $127 |
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.
How this compares
$6,832 in reported general payments places this provider in the 75th percentile of 282 hematology & oncology providers in Michigan.
Other hematology & oncology in Detroit
- Mohammed Al HallakDetroit$644K
- Jeffrey ZonderDetroit$88K
- Hadeel AssadDetroit$80K
- Wasif SaifDetroit$44K
- Harsh ShahDetroit$38K
- Hirva MamdaniDetroit$28K
- Abhinav DeolDetroit$18K
- Lawrence FlahertyDetroit$18K
- Susan HaroldDetroit$14K
- Anthony ShieldsDetroit$12K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.