Christopher Wilcox, MD
Nephrology · Washington, DCNPI 1245231109
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (56.1%), consulting fees and travel and lodging — rather than concentrated in one kind of arrangement. 9 manufacturers reported payments, led by Merck at 55.3% of the total. Reporting peaked in 2019 at $28,343 and has fallen 99.5% since, to $147 in 2025. Among nephrology clinicians in DC 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 33 payments — averaging $1241.75 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$23K
- E.r. Squibb & Sons, L.L.C.$9K
- Vifor Pharma, Inc.$6K
- Sanofi US Services Inc.$2K
- AstraZeneca$817
- Bayer$225
- plus $302 from 3 others
What the payments were for
- Consulting fees$12,10830%
- Speaking & faculty fees$22,97056%
- Travel & lodging$4,16810%
- Food & beverage$1,7324%
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 | 2 | $22,650 |
| E.r. Squibb & Sons, L.L.C. | 3 | $8,850 |
| Vifor Pharma, Inc. | 18 | $5,784 |
| Sanofi US Services Inc. | 3 | $2,350 |
| AstraZeneca | 2 | $817 |
| Bayer | 2 | $225 |
| Travere Therapeutics, Inc. | 1 | $147 |
| Esperion Therapeutics, Inc. | 1 | $131 |
| Bristol Myers Squibb | 1 | $24 |
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
$40,978 in reported general payments places this provider in the 90th percentile of 62 nephrology providers in District of Columbia.
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 nephrology in Washington
- Ashte CollinsWashington$1M
- Bruce LeslieWashington$217K
- Janani RangaswamiWashington$152K
- Robert RubinWashington$119K
- Ehsan Nobakht HaghighiWashington$50K
- Michael LipkowitzWashington$21K
- Dominic RajWashington$19K
- Cosette JamiesonWashington$13K
- Elwin BustosWashington$9K
- Antonina KolesnikovaWashington$7K
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.