Sarah Callahan, MD
Diagnostic Radiology · Louisville, KYNPI 1831220557
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $1,414 of the $1,914 with a category attached, or 73.9%. 15 manufacturers reported payments, led by Bioptics, Inc. at 26.1% of the total. Among diagnostic radiology clinicians in KY with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 30 payments — averaging $63.81 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Bioptics, Inc.$500
- Sirius Medical Systems$248
- Bard Peripheral Vascular, Inc.$238
- Focal Therapeutics, Inc.$216
- Siemens Medical Solutions USA, Inc.$147
- Lunit Americas, Inc.$112
- plus $453 from 9 others
What the payments were for
- Consulting fees$25013%
- Speaking & faculty fees$25013%
- Food & beverage$1,41474%
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 |
|---|---|---|
| Bioptics, Inc. | 2 | $500 |
| Sirius Medical Systems | 3 | $248 |
| Bard Peripheral Vascular, Inc. | 4 | $238 |
| Focal Therapeutics, Inc. | 7 | $216 |
| Siemens Medical Solutions USA, Inc. | 1 | $147 |
| Lunit Americas, Inc. | 1 | $112 |
| RTI Surgical, Inc | 1 | $108 |
| Hologic Sales And Service, LLC | 4 | $108 |
| Canon Medical Systems USA, Inc. | 1 | $78 |
| Hologic Inc | 1 | $62 |
| Elucent Medical | 1 | $28 |
| Novartis | 1 | $24 |
| AstraZeneca | 1 | $18 |
| Puma Biotechnology, Inc. | 1 | $16 |
| Merit Medical Systems Inc | 1 | $10 |
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.
- Localizer$500
- Mammomat B.brilliant$147
- PINTUITION$108
- CORTIVA ALLOGRAFT DERMIS$108
How this compares
$1,914 in reported general payments places this provider in the 90th percentile of 375 diagnostic radiology providers in Kentucky.
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 diagnostic radiology in Louisville
- Robert SteinbockLouisville$74K
- Bartosz RydzewskiLouisville$22K
- John SunderlandLouisville$14K
- Jackson UnterinerLouisville$11K
- Christopher CornellLouisville$11K
- Jimmy XuLouisville$8K
- Daren RepishtiLouisville$7K
- Robert HookerLouisville$7K
- Ahmed ElakkadLouisville$4K
- Elsa KuhlLouisville$4K
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.