> ## Documentation Index
> Fetch the complete documentation index at: https://nango.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# eClinicalWorks (FHIR)

> Integrate your application with the eClinicalWorks FHIR API using SMART Backend Services

## 🚀 Quickstart

Connect to eClinicalWorks with Nango and see data flow in a few minutes. eClinicalWorks uses the SMART Backend Services flow — a machine-to-machine, JWT-signed authentication, with no end-user OAuth redirect.

**1. Create the integration**

In Nango ([free signup](https://app.nango.dev)), go to **Integrations** → *Configure New Integration* → *eClinicalWorks (FHIR)*. Register your Client ID, Key ID, Private Key, and Scope in the **Settings** tab — see the [setup guide](https://nango.dev/docs/api-integrations/eclinicalworks/how-to-register-your-own-eclinicalworks-app). These are entered once and reused automatically by every connection.

**2. Connect a practice**

Each connection represents one practice's FHIR facade. Create it by supplying that practice's **FHIR Base URL** and **OAuth Server URL** — see the [connect guide](https://nango.dev/docs/api-integrations/eclinicalworks/connect) for the exact fields.

**3. Call the eClinicalWorks FHIR API**

Make your first request. Replace the placeholders with your API key (from **Environment Settings**), integration ID, and connection ID:

**cURL**

```bash theme={null}
curl "https://api.nango.dev/proxy/Patient" \
  -H "Authorization: Bearer <NANGO-API-KEY>" \
  -H "Provider-Config-Key: <INTEGRATION-ID>" \
  -H "Connection-Id: <CONNECTION-ID>"
```

**Node**

Install Nango's backend SDK with `npm i @nangohq/node`. Then run:

```typescript theme={null}
import { Nango } from '@nangohq/node';

const nango = new Nango({ apiKey: '<NANGO-API-KEY>' });

const res = await nango.get({
    endpoint: '/Patient',
    providerConfigKey: '<INTEGRATION-ID>',
    connectionId: '<CONNECTION-ID>'
});

console.log(res.data);
```

Or fetch credentials with the [Node SDK](https://nango.dev/docs/reference/backend/backend-sdk/node.md#get-a-connection-with-credentials) or [API](https://nango.dev/docs/reference/backend/http-api/connections/get.md).

✅ You're connected! Check the **Logs** tab in Nango to inspect requests.

**4. Implement Nango in your app**

Follow our [Auth implementation guide](https://nango.dev/docs/guides/auth/auth-guide.md) to integrate Nango in your app.

## 📚 eClinicalWorks (FHIR) integration guides

Nango-maintained guides for common use cases.

* [How to register your own eClinicalWorks app](https://nango.dev/docs/api-integrations/eclinicalworks/how-to-register-your-own-eclinicalworks-app)\
  Register with the eClinicalWorks Dev Portal, generate a key pair, host your JWKS file, and obtain your Client ID

* [How to connect a practice to eClinicalWorks](https://nango.dev/docs/api-integrations/eclinicalworks/connect)\
  Create a connection for a practice once your app is registered and approved

Official docs: [eClinicalWorks Platform for Open Development — Backend Services authentication](https://fhir.eclinicalworks.com/ecwopendev/documentation/getting-started/backend/authentication)

## 🧩 Pre-built syncs & actions for eClinicalWorks (FHIR)

Explore Nango-provided actions in your dashboard. Extend and customize them to fit your needs.

*No pre-built syncs or actions available yet.*

> [!TIP]
>
> Not seeing the integration you need? [Build your own](https://nango.dev/docs/guides/functions/functions-guide.md) independently.

***


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