io.github.npiwhoPublished by GitHub account npiwhov1.0.0Updated Oct 26, 2026
US health care providers by NPI, name or phone, with payments, Medicare, OIG and facility data.
Remote MCP server for looking up US health care providers by NPI, name, phone or location, with public payment, Medicare, exclusion and facility records.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/io.github.npiwho%2Fnpiwho/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"npi-who": {
"type": "http",
"url": "https://npiwho.com/mcp"
}
}
}Look up US health care providers from AI assistants: by NPI, by name, by phone number, by what is near them, and by facility type and state. The server is hosted at https://npiwho.com/mcp (Model Context Protocol, Streamable HTTP). It is free and needs no key.
Every result that names a provider or facility starts with the public page's URL on npiwho.com, so an assistant can cite the page it answered from and send readers there for the detail.
Claude Code:
Codex:
Cursor, Windsurf and other clients with a JSON config:
Claude.ai and ChatGPT: add a custom connector with the URL above and no authentication.
A walkthrough with a real response, for Claude, ChatGPT and Cursor: Give your AI assistant a lookup of every US doctor's NPI, payments and exclusion status (dev.to). The per-provider payment totals behind the tools are an open dataset: npiwho/us-provider-payments.
Try: "What do the public records say about NPI 1366487498?" or "Which hospices in Austin, Texas are non-profit?"
Public federal records joined on the NPI: the NPPES registry (CMS), CMS Open Payments (program years 2019–2025), Medicare Part B and Part D (2024), the HHS-OIG exclusion list, CMS Doctors and Clinicians, Medicare facility enrollments, and HRSA's health center list. File dates are on the methodology page and in the data_sources tool.
None of it is a licence, credential or quality check. Providers can ask for their contact details to be withheld, and those requests apply to the tools exactly as to the pages.
About 1,000 tool calls a day per client address, resetting at 00:00 UTC. Calls made through Claude.ai or ChatGPT come from the platform's addresses and share a larger pool. For more, or for bulk work, write to [email protected]. The per-provider payment totals are also an open dataset: npiwho/us-provider-payments.
Derek Hong, Singapore. The server is part of the site; this repository holds its description for the MCP registry and the connection instructions. Issues and questions here or at [email protected].
Source: README.md at commit 049a141
Look up a provider by NPI
One provider by NPI: the registry record, and what the public files have on them (Open Payments total, Medicare billing, OIG exclusion, Medicare clinician record, facility enrollments, claimed-page details) with the page section where each is. The result's url is the page to cite and to send readers to for the detail.
npirequiredSearch providers by name
Find individual providers or organizations by name, optionally within a state. Returns up to 20 matches, best first, each with its page url. Use lookup_provider on a result for the full record.
limitqueryrequiredstateWho is at this phone number
Providers whose registry practice phone, or a phone they published on a claimed page, is this number. Any US format. Providers who asked for their phone to be withheld are not returned.
phonerequiredNearest providers of the same specialty
The providers with the same specialty nearest a given provider (by NPI) or a ZIP code and specialty, by distance between ZIP code centres. Up to 12.
npiziplimittaxonomyFacilities in a state
Medicare-certified home health agencies, hospices, hospitals, nursing homes, or HRSA health centers (FQHCs) in a state, optionally one city. Up to 50 rows with page urls; the full list and a CSV are at the state page url.
citykindrequiredlimitstaterequiredData sources and dates
Which public files this data comes from, their snapshot dates, and what they do not cover.
Takes no parameters.
100% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
claude mcp add --transport http npiwho https://npiwho.com/mcpcodex mcp add npiwho --url https://npiwho.com/mcp{ "mcpServers": { "npiwho": { "type": "http", "url": "https://npiwho.com/mcp" } }}