# Look up a provider by NPI

URL: https://docs.healthcare.dev/reference/providers/look-up-a-provider-by-npi

```http
GET https://api.healthcare.dev/v1/providers/{npi}
```

Provider record from CMS NPPES: names, practice location and mailing addresses, taxonomies (with licenses) and enumeration, update and deactivation dates. Deactivated NPIs return only the NPI and dates.

Requires an API key: `Authorization: Bearer hdev_live_...`. See [Authentication](/authentication).

## Path parameters

| Name | Type | Required | Description | Example |
| --- | --- | --- | --- | --- |
| `npi` | string | yes | 10-digit National Provider Identifier | `1881018208` |

## Query parameters

| Name | Type | Required | Description | Example |
| --- | --- | --- | --- | --- |
| `view` | "compact" \| "full" | no | `compact` returns only the fields an agent usually needs (fewer tokens); `full` (default) returns every field | `compact` |
| `fields` | string | no | Comma-separated record fields to return, e.g. `code,display,billable` | `code,display,billable` |

## Examples

**curl**

```sh
curl "https://api.healthcare.dev/v1/providers/1881018208" \
  -H "Authorization: Bearer $HDEV_API_KEY"
```

**TypeScript**

```ts
const res = await fetch("https://api.healthcare.dev/v1/providers/1881018208", {
  headers: { Authorization: `Bearer ${process.env.HDEV_API_KEY}` },
});
const { data, meta } = await res.json();
```

**Python**

```python
import os
import requests

res = requests.get("https://api.healthcare.dev/v1/providers/1881018208", headers={"Authorization": f"Bearer {os.environ['HDEV_API_KEY']}"})
body = res.json()
```

## Response

The provider

```json
{
  "data": {
    "npi": "string",
    "entity_type": "individual",
    "name": {
      "display": "string",
      "first": "string",
      "middle": "string",
      "last": "string",
      "prefix": "string",
      "suffix": "string",
      "credential": "string",
      "organization": "string"
    },
    "status": "active",
    "enumeration_date": "2026-10-01",
    "last_updated": "2026-10-01",
    "deactivation_date": "2026-10-01",
    "reactivation_date": "2026-10-01",
    "addresses": [
      {
        "purpose": "location",
        "line1": "string",
        "line2": "string",
        "city": "string",
        "state": "string",
        "postal_code": "string",
        "country": "string",
        "phone": "string",
        "fax": "string",
        "geo": {
          "lat": null,
          "lon": null
        }
      }
    ],
    "taxonomies": [
      {
        "code": "string",
        "display": "string",
        "primary": true,
        "license": "string",
        "license_state": "string"
      }
    ]
  },
  "meta": {
    "source": "cms-icd10",
    "data_version": "2026.1",
    "retrieved_at": "2026-10-24T12:00:00Z",
    "license": "Public domain (CMS). Reference data, not medical advice."
  },
  "links": {
    "self": "/v1/providers/1881018208",
    "next": null
  }
}
```

### Fields

| Field | Type | Always present | Description |
| --- | --- | --- | --- |
| `npi` | string | yes |  |
| `entity_type` | "individual" \| "organization" \| null | yes | null for deactivated NPIs: CMS publishes only the NPI and its dates |
| `name` | object | yes |  |
| `status` | "active" \| "deactivated" | yes |  |
| `enumeration_date` | string \| null (date) | yes |  |
| `last_updated` | string \| null (date) | yes |  |
| `deactivation_date` | string \| null (date) | yes |  |
| `reactivation_date` | string \| null (date) | yes |  |
| `addresses` | Address[] | yes |  |
| `taxonomies` | ProviderTaxonomy[] | yes |  |

## Errors

Errors are `application/problem+json` ([RFC 9457](https://www.rfc-editor.org/rfc/rfc9457)). Branch on `type`, not on `title`. See [Errors](/errors).

| Status | `type` | When |
| --- | --- | --- |
| 400 | `invalid-request` | A parameter or the body failed validation; `errors` lists each field. |
| 401 | `unauthorized` | Missing, malformed or revoked API key. |
| 404 | `not-found` | No record with that id (retired records are still returned). |
| 429 | `rate-limited / quota-exceeded` | Too many requests per second (retry after `Retry-After`), or the monthly quota is used up. |
| 503 | `dataset-unavailable / unavailable` | The dataset has no published version yet, or the service is degraded. |