open_payments_top_companies
Pack: cms-open-payments · Endpoint: https://gateway.pipeworx.io/cms-open-payments/mcp
Rank the drug and device manufacturers that paid US physicians and teaching hospitals the most in a program year — the “who spends the most on doctors” question. Returns each company with its total US dollars, payment count and how many distinct recipients it reached, ordered by spend. CMS publishes no aggregate and its live API cannot group over the 14-million-row payment table, so this reads a summary computed offline; the response states the program year and when the summary was refreshed. Payments are disclosures of transfers of value, not evidence of wrongdoing.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
program_year | number | no | Program year, e.g. 2025. Defaults to the most recent year loaded — the response always says which. |
company | string | no | Optional: one company, to get its total rather than the ranking. Matched case-insensitively. |
limit | number | no | Companies to return, 1-200 (default 25). |
Example call
curl -X POST https://gateway.pipeworx.io/cms-open-payments/mcp \
-H 'Content-Type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"open_payments_top_companies","arguments":{}}}'Connect
Add this to your MCP client config, or use one-click install buttons:
{
"mcpServers": {
"cms-open-payments": {
"url": "https://gateway.pipeworx.io/cms-open-payments/mcp"
}
}
}See Getting Started for client-specific install steps.