# Healthparse NPI Enumeration Lookup

> Healthparse NPI Enumeration Lookup is a paid API for AI agents from api.healthparse.io, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).

Returns newly-enumerated NPIs with their exact Provider Enumeration Date and taxonomy detail, filtered by date range, taxonomy code, state, entity type, and active status.

## Facts

- Endpoint: GET https://api.healthparse.io/v1/providers/enumeration
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/healthparse-npi-enumeration-lookup-a19fba5d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BvO31d1QHNHY-MyCSlbZn

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability healthparse-npi-enumeration-lookup-a19fba5d
```

Example prompt: Show me all newly enumerated individual providers in Texas with a psychiatry taxonomy code (2084P0800X) since January 1, 2024 — sort by enumeration date descending and give me the first 50 active ones.

## When to prefer this

Choose this endpoint when you need precise NPI enumeration dates to identify newly credentialed providers or organizations within a specific date window, taxonomy, or geography — particularly when you need to go beyond the standard NPPES event feed and require exact enumerated_since dating with taxonomy and state filtering in a single call.

## Known failure modes

- Invalid taxonomy code returns empty results or 400 error
- Invalid state code causes 400 validation error
- Date range with no matching enumerations returns empty result set
- enumerated_since after enumerated_before causes 400 bad request
- Exceeding limit of 100 records per call returns 400 error
- Payment failure (x402) blocks access before query is executed

## How this service works

Newly-enumerated NPIs with their EXACT Provider Enumeration Date and taxonomy detail, from the CMS NPPES full monthly file joined to the NPPES directory. Answers: which providers/organizations of a given taxonomy were newly issued an NPI in my state since a date? Precise new-provider dating (enumerated_since) that sharpens the existing NPPES event feed. Filter: enumerated_since/before, taxonomy, state, license_state, entity_type, active_only; sort by enumeration_date.

## Output

A paginated list of providers/organizations newly issued NPIs, each record including the NPI, exact enumeration date, taxonomy code(s), entity type (individual or organization), practice state, license state, and active status — drawn from the CMS NPPES full monthly file joined to the NPPES directory.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "sort": {
     "type": "string",
     "description": "enumeration_date|last_update_date, optionally :asc/:desc"
    },
    "limit": {
     "type": "integer",
     "default": 25,
     "maximum": 100
    },
    "state": {
     "type": "string",
     "description": "practice state (from NPPES directory), 2-letter code(s)"
    },
    "offset": {
     "type": "integer",
     "default": 0
    },
    "taxonomy": {
     "type": "string",
     "description": "primary Healthcare Provider Taxonomy code(s), comma-separated, e.g. '207Q00000X'"
    },
    "active_only": {
     "type": "boolean",
     "description": "exclude deactivated NPIs"
    },
    "entity_type": {
     "type": "string",
     "description": "'I' individual | 'O' organization"
    },
    "license_state": {
     "type": "string",
     "description": "primary license state code(s)"
    },
    "enumerated_since": {
     "type": "string",
     "description": "NPIs enumerated on/after this date (YYYY-MM-DD)"
    },
    "enumerated_before": {
     "type": "string",
     "description": "NPIs enumerated on/before this date (YYYY-MM-DD)"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/healthparse-npi-enumeration-lookup-a19fba5d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.healthparse.io](https://www.zero.xyz/host/api.healthparse.io/llms.txt)