NPI Who

MCP server · hosted · v1.0.0 · io.github.npiwho/npiwho

Online · tested 57m agoNEW · 2h agoSeen in the registry 1h ago

US health care providers by NPI, name or phone, with payments, Medicare, OIG and facility data.

What it does

NPI Who is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.

From the publisher's description, Electra Index matched it to one capability: payments. That makes it a candidate for tasks such as detect fraudulent transactions or reconcile payments.

Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence). None of this is a test of the tool.

At a glance

Hosted (remote)YES

Local installNO

Live checkOnline · 6 tools

Version1.0.0

PriceNot in the registry

First seen25 Oct 2026

Last checked1h ago

How to connect

As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 57m ago (live check)

Hosted endpoint

https://npiwho.com/mcp streamable-http

In Claude Code: claude mcp add --transport http npi-who https://npiwho.com/mcp

MCP settings (Claude Desktop, Cursor and other MCP clients)

{
  "mcpServers": {
    "npi-who": {
      "url": "https://npiwho.com/mcp"
    }
  }
}

Live check

Electra Index connected to the hosted endpoint 57m ago

ONLINE NPI Who answered an MCP connection on 25 Oct 2026 and introduced itself as npiwho 1.0.0 (MCP protocol 2025-06-18).

6 tools offered to AI assistants

lookup_provider · 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
search_providers · 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.
lookup_phone · 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.
nearby_providers · 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.
list_facilities · 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.
data_sources · Which public files this data comes from, their snapshot dates, and what they do not cover.

What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method

Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. Launch offer: $39.99 once, for life.

Tasks it helps with

Share of each task's required capabilities it covers

Detect fraudulent transactions Payments	50%
Reconcile payments Payments	33%
Buy products online Payments	33%
Handle refund requests Payments	33%

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Ready-made AI agents

An MCP server is a connector you add to your own assistant. These are finished products that do the same job for you:

Digits86
$65/mo
Ramp (AI agents)86
$15/mo · free plan
Cal.com74
$12/mo · free plan

Facts & evidence

Each fact shows where it was seen and when.

Fact	Value	Evidence	Source	Last confirmed
Hosted endpoint	https://npiwho.com/mcp	DECLARED	SRC-001 Official MCP Registry	1h ago
Local install (package)	no	DECLARED	SRC-001 Official MCP Registry	1h ago
Remote access (hosted)	yes	DECLARED	SRC-001 Official MCP Registry	1h ago
Website	https://npiwho.com/developers/mcp	DECLARED	SRC-001 Official MCP Registry	1h ago
Repository	https://github.com/npiwho/mcp	DECLARED	SRC-001 Official MCP Registry	1h ago
Registry status	active	DECLARED	SRC-001 Official MCP Registry	1h ago
Version	1.0.0	DECLARED	SRC-001 Official MCP Registry	1h ago
MCP server	yes	DECLARED	SRC-001 Official MCP Registry	1h ago

Change history

NEW25 Oct 2026
first seen in the index

Is this page accurate?

Flag it and our robot re-checks the official source. Reports never change a score.

Is NPI Who still online?

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Questions about NPI Who

How do I connect NPI Who?

Use the hosted endpoint https://npiwho.com/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.

What tools does NPI Who offer?

When Electra Index connected on 25 Oct 2026, it listed 6 tools: lookup_provider, search_providers, lookup_phone, nearby_providers, list_facilities, data_sources. The full list is in "Live check" above.

Is NPI Who online?

Yes. Its hosted endpoint answered an MCP connection from Electra Index 57m ago.

What can I use NPI Who for?

Based on its description, it is most relevant to: detect fraudulent transactions, reconcile payments, buy products online, handle refund requests.