Alexander Diaz, MD
Radiation Oncology · Murray, KYNPI 1962908889
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 85 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 27 manufacturers, the largest accounting for just 18.1% — the pattern of someone who eats at a lot of different presentations. 2025 is the largest year on record at $993, 4.6 times the $217 reported in 2023.
Across 85 payments — averaging $20.85 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$321
- Johnson & Johnson$183
- Novartis$155
- Regeneron Healthcare Solutions, Inc.$141
- Takeda Pharmaceuticals U.S.A., Inc.$119
- AstraZeneca$117
- plus $737 from 21 others
What the payments were for
- Food & beverage$1,772100%
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 |
|---|---|---|
| Merck | 17 | $321 |
| Johnson & Johnson | 10 | $183 |
| Novartis | 6 | $155 |
| Regeneron Healthcare Solutions, Inc. | 6 | $141 |
| Takeda Pharmaceuticals U.S.A., Inc. | 5 | $119 |
| AstraZeneca | 5 | $117 |
| Lilly USA, LLC | 5 | $92 |
| Stemline Therapeutics Inc. | 4 | $69 |
| Boehringer Ingelheim | 2 | $58 |
| AbbVie | 3 | $58 |
| Sumitomo Pharma America, Inc. | 2 | $53 |
| Incyte Corporation | 2 | $51 |
| Genentech USA, Inc. | 2 | $37 |
| Puma Biotechnology, Inc. | 2 | $35 |
| Bayer | 2 | $34 |
| Siemens Medical Solutions USA, Inc. | 1 | $29 |
| Coherus Oncology, Inc. | 1 | $29 |
| Pfizer | 1 | $26 |
| Sandoz | 1 | $24 |
| Tempus AI, Inc | 1 | $22 |
| Mirati Therapeutics, Inc. | 1 | $21 |
| Sanofi | 1 | $18 |
| Tersera Therapeutics LLC | 1 | $18 |
| Eisai Inc. | 1 | $16 |
| AVEO Pharmaceuticals, Inc. | 1 | $16 |
| Pharmacosmos Therapeutics Inc. | 1 | $15 |
| Sobi, Inc | 1 | $15 |
How this compares
$1,772 in reported general payments places this provider in the 75th percentile of 81 radiation oncology 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Oxycodone Hcl | 36 | $1,161 |
| Sucralfate | 15 | $684 |
| Lidocaine Hcl ViscousLidocaine Hcl | 15 | $307 |
| Tamsulosin Hcl | 33 | $250 |
| Dexamethasone | 17 | $88 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Murray
- Neal DunlapLouisville$98K
- Elyn WangPikeville$21K
- Eddy YangLexington$20K
- Craig SilvermanLouisville$9K
- Shiao WooLouisville$7K
- Ryan AbelOwensboro$6K
- Brian WilliamsLexington$5K
- Justin AndersonLouisville$5K
- Aaron SpaldingLouisville$5K
- Yong ChaLouisville$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.