Dawn Caster, MD
Nephrology · Louisville, KYNPI 1659402287
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (50.0%), consulting fees and travel and lodging — rather than concentrated in one kind of arrangement. 13 manufacturers reported payments, led by Calliditas Therapeutics US Inc. at 34.3% of the total. Reporting peaked in 2024 at $59,953 and has fallen 54.6% since, to $27,233 in 2025. Among nephrology clinicians in KY with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 179 payments — averaging $1077.15 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Calliditas Therapeutics US Inc.$66K
- GSK$46K
- Aurinia Pharma U.S., Inc.$33K
- Travere Therapeutics, Inc.$21K
- Novartis$15K
- Apellis Pharmaceuticals, Inc.$9K
- plus $3K from 7 others
Across 157 payments — averaging $4517.24 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.
- Novartis$283K
- Travere Therapeutics, Inc.$269K
- AstraZeneca$152K
- Mallinckrodt Enterprises LLC$3K
- Mallinckrodt Hospital Products Inc.$3K
What the payments were for
- Consulting fees$72,58038%
- Speaking & faculty fees$96,44050%
- Grants$1,0391%
- Travel & lodging$17,2899%
- Food & beverage$5,3093%
- Education$1530%
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 |
|---|---|---|
| Calliditas Therapeutics US Inc. | 51 | $66,059 |
| GSK | 22 | $45,752 |
| Aurinia Pharma U.S., Inc. | 39 | $32,860 |
| Travere Therapeutics, Inc. | 40 | $21,348 |
| Novartis | 8 | $14,706 |
| Apellis Pharmaceuticals, Inc. | 10 | $8,864 |
| AstraZeneca | 1 | $2,680 |
| Amgen | 2 | $215 |
| Otsuka America Pharmaceutical, Inc. | 2 | $138 |
| Mallinckrodt Hospital Products Inc. | 1 | $100 |
| Genentech, Inc. | 1 | $53 |
| Vifor Pharma, Inc. | 1 | $22 |
| Baxter Healthcare | 1 | $11 |
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
$192,810 in reported general payments places this provider in the 95th percentile of 165 nephrology 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 |
|---|---|---|
| Mycophenolate Mofetil | 21 | $4,003 |
| Mycophenolic AcidMycophenolate Sodium | 17 | $2,509 |
| Amlodipine Besylate | 51 | $495 |
| Carvedilol | 42 | $480 |
| Prednisone | 35 | $347 |
| Losartan Potassium | 55 | $339 |
| Furosemide | 43 | $304 |
| Potassium Chloride | 19 | $276 |
| Benazepril Hcl | 13 | $183 |
| Metoprolol Tartrate | 17 | $101 |
| Allopurinol | 16 | $100 |
| Hydralazine Hcl | 11 | $98 |
| Calcitriol | 11 | $82 |
| Lisinopril | 24 | $53 |
| Bumetanide | 11 | $41 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Louisville
- Danny WooLouisville$427K
- Nizar AttallahLouisville$113K
- Shafic Abdul Wahab El HindiLouisville$45K
- George AronoffLouisville$26K
- Jai BhimaniLouisville$10K
- Alexander AfanasyevLouisville$10K
- William DuffLouisville$9K
- Bhagwan BhimaniLouisville$7K
- Aziz ChamiLouisville$6K
- John GleasonLouisville$5K
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.