Server data from the Official MCP Registry
US health care providers by NPI, name or phone, with payments, Medicare, OIG and facility data.
About
US health care providers by NPI, name or phone, with payments, Medicare, OIG and facility data.
Remote endpoints: streamable-http: https://npiwho.com/mcp
Security Report
Valid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry.
6 tools verified · Open access · No issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Found in Source Code
Found by scanning the linked source code. This listing connects to a hosted endpoint, so none of this runs on your machine: it describes what the server software does where it is hosted.
How to Connect
Remote Plugin
No local installation needed. Your AI client connects to the remote endpoint directly.
Add this to your MCP configuration to connect:
{
"mcpServers": {
"io-github-npiwho-npiwho": {
"url": "https://npiwho.com/mcp"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
NPI Who MCP server
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.
Connect
Claude Code:
claude mcp add --transport http npiwho https://npiwho.com/mcp
Codex:
codex mcp add npiwho --url https://npiwho.com/mcp
Cursor, Windsurf and other clients with a JSON config:
{
"mcpServers": {
"npiwho": { "type": "http", "url": "https://npiwho.com/mcp" }
}
}
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.
Tools
| Tool | Returns |
|---|---|
lookup_provider | One NPI: the registry record, and what the public files have on the provider (Open Payments total, Medicare billing, OIG exclusion, Medicare clinician record, facility enrollments, claimed-page details), each pointing to the page section with the detail. |
search_providers | Individuals or organizations by name, optionally within a state. Up to 20. |
lookup_phone | Who lists a given phone number, in any US format. |
nearby_providers | The nearest providers of the same specialty, from an NPI or from a ZIP code and taxonomy code. |
list_facilities | Medicare-certified home health agencies, hospices, hospitals, nursing homes, or HRSA health centers in a state or city. |
data_sources | Which files the answers come from and their snapshot dates. |
Try: "What do the public records say about NPI 1366487498?" or "Which hospices in Austin, Texas are non-profit?"
Data
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.
Allowance
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 data@npiwho.com. The per-provider payment totals are also an open dataset: npiwho/us-provider-payments.
Who runs it
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 data@npiwho.com.
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