Thomas Flaig, MD
Hematology & Oncology · Aurora, CONPI 1881620326
Payments from drug & device makers
Across 491 payments — averaging $11,946 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$2.4M
- Seagen Inc.$1.3M
- Astrazeneca UK Limited$598K
- Genentech, Inc.$548K
- Astellas Pharma Global Development$520K
- Janssen Research & Development, LLC$185K
- plus $368K from 6 others
Across 30 payments — averaging $549.65 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.
- Astellas Pharma Global Development$8K
- Pfizer$8K
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 | 93 | $2,385,211 |
| Seagen Inc. | 122 | $1,260,199 |
| Astrazeneca UK Limited | 5 | $598,474 |
| Genentech, Inc. | 55 | $548,233 |
| Astellas Pharma Global Development | 88 | $519,808 |
| Janssen Research & Development, LLC | 47 | $185,214 |
| Pfizer | 35 | $179,975 |
| E.r. Squibb & Sons, L.L.C. | 11 | $143,535 |
| AstraZeneca | 27 | $44,241 |
| Sanofi | 2 | $287 |
| Genentech USA, Inc. | 1 | $237 |
| Taiho Oncology, Inc. | 5 | $191 |
How this compares
$5,865,607 in reported general payments places this provider in the 90th percentile of 169 hematology & oncology providers in Colorado.
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.
Other hematology & oncology in Aurora
- John BurkeAurora$25.4M
- Elena ShagisultanovaAurora$22.4M
- Elaine LamAurora$12.6M
- Daniel PollyeaAurora$9.4M
- Manali KamdarAurora$8.9M
- Jennifer DiamondAurora$7.1M
- Ryan WeightAurora$2.9M
- Sujatha NallapareddyAurora$1.7M
- Sami DiabAurora$1.6M
- Breelyn WilkyAurora$1.5M
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.