Vimal Derebail, MD
Nephrology · Chapel Hill, NCNPI 1639381999
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $22,586 of the $28,328 with a category attached, or 79.7%. 10 manufacturers reported payments, led by Novartis at 59.6% of the total. Reporting peaked in 2020 at $11,276 and has fallen 91.3% since, to $984 in 2025. Among nephrology clinicians in NC 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 53 payments — averaging $534.49 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novartis$17K
- Travere Therapeutics, Inc.$6K
- Merck$3K
- Amgen$2K
- Pfizer$222
- Vertex$129
- plus $217 from 4 others
Across 102 payments — averaging $9540.53 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.
- Vertex$583K
- Travere Therapeutics, Inc.$190K
- Boehringer Ingelheim$105K
- Gilead$44K
- Sanofi$40K
- Mallinckrodt Enterprises LLC$10K
- plus $2K from 2 others
What the payments were for
- Consulting fees$22,58680%
- Travel & lodging$3,85514%
- Food & beverage$1,8877%
- Education$00%
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 |
|---|---|---|
| Novartis | 18 | $16,892 |
| Travere Therapeutics, Inc. | 25 | $6,027 |
| Merck | 1 | $2,725 |
| Amgen | 1 | $2,116 |
| Pfizer | 1 | $222 |
| Vertex | 2 | $129 |
| Boehringer Ingelheim | 2 | $87 |
| AstraZeneca | 1 | $73 |
| Fresenius USA Marketing, Inc. | 1 | $34 |
| Aurinia Pharma U.S., Inc. | 1 | $23 |
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
$28,328 in reported general payments places this provider in the 95th percentile of 366 nephrology providers in North Carolina.
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 |
|---|---|---|
| JardianceEmpagliflozin | 13 | $9,938 |
| Sevelamer Carbonate | 12 | $2,007 |
| Telmisartan | 26 | $1,553 |
| Mycophenolate Mofetil | 33 | $1,491 |
| Irbesartan | 57 | $480 |
| Metoprolol Succinate | 25 | $390 |
| Losartan Potassium | 27 | $343 |
| Chlorthalidone | 19 | $319 |
| Hydroxychloroquine Sulfate | 16 | $299 |
| Nifedipine ErNifedipine | 17 | $266 |
| Amlodipine Besylate | 28 | $258 |
| Spironolactone | 21 | $185 |
| Furosemide | 30 | $162 |
| Carvedilol | 22 | $138 |
| Torsemide | 12 | $124 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| Boehringer IngelheimJardiance | $87 | $9,93813 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 95th percentile of 366 nephrology providers in North Carolina.
Other nephrology in Chapel Hill
- Jennifer FlytheChapel Hill$26K
- Maria Diaz-Gonzalez FerrisChapel Hill$19K
- Abhijit KshirsagarChapel Hill$13K
- Ronald FalkChapel Hill$11K
- Monica ReynoldsChapel Hill$9K
- William FinnChapel Hill$8K
- Gregory GreenwoodWinston-Salem$947K
- Michael EtomiCharlotte$212K
- William KendrickGreenville$125K
- Jason EckelCary$123K
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.