Richard Hammer, MD
Hematology · Columbia, MONPI 1750342218
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $79,966 of the $103,396 with a category attached, or 77.3%. GE HealthCare accounts for 65.2% of it on its own, with 7 other manufacturers making up the rest. Reporting peaked in 2022 at $70,611 and has fallen 99.8% since, to $114 in 2025.
Across 46 payments — averaging $2247.73 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- GE HealthCare$67K
- Roche Diagnostics Corporation$16K
- Roche Molecular Systems, Inc.$14K
- Astrazeneca UK Limited$2K
- Lilly USA, LLC$2K
- Foundation Medicine, Inc.$2K
- plus $105 from 2 others
Across 3 payments — averaging $19,061 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.
- Roche Molecular Systems, Inc.$51K
- Ventana Medical Systems, Inc.$6K
What the payments were for
- Consulting fees$79,96677%
- Speaking & faculty fees$18,46018%
- Travel & lodging$2,6273%
- Food & beverage$1,4931%
- Education$8501%
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 |
|---|---|---|
| GE HealthCare | 2 | $67,374 |
| Roche Diagnostics Corporation | 12 | $15,768 |
| Roche Molecular Systems, Inc. | 26 | $14,307 |
| Astrazeneca UK Limited | 1 | $2,118 |
| Lilly USA, LLC | 1 | $2,100 |
| Foundation Medicine, Inc. | 2 | $1,624 |
| Ventana Medical Systems, Inc. | 1 | $77 |
| Siemens Medical Solutions USA, Inc. | 1 | $28 |
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.
- Graffiti$67,374
- DIS Navify Software$14,500
- DIAGNOSTICS INFORMATION SYSTEMS$2,400
- FOUNDATIONONE CDX$1,624
- NAVIFY Products$910
- FOUNDATIONONE$124
- FOUNDATIONONE HEME$124
- FOUNDATIONFOCUS$124
- FOUNDATIONONE LIQUID CDX$124
How this compares
$103,396 in reported general payments places this provider in the 85th percentile of 27 hematology providers in Missouri.
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 in Columbia
- Belinda FenderColumbia$108
- Morey BlinderSaint Louis$235K
- Stephen OhSaint Louis$143K
- Elaine MajerusSaint Louis$111K
- Govind BhagatSaint Louis$67K
- Amy ZhouSaint Louis$18K
- Shaun HansonSaint Louis$15K
- Stuart KornfeldSaint Louis$4K
- Brian SmithBridgeton$3K
- Joshua SinerSaint Louis$1K
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.