NPPES

National Plan & Provider Enumeration System, info on healthcare providers registered in US

Endpoint	`https://npiregistry.cms.hhs.gov`
Trust	100% uptime over 1 checks · ~398 ms
Pricing	See the provider
docs url	https://npiregistry.cms.hhs.gov/registry/help-api
auth	none
source	public_apis

Use it

Endpoint

https://npiregistry.cms.hhs.gov

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/982

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}