curl --request POST \
  --url https://api.example.com/v1/patients/batch \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "items": [
    {
      "first_name": "<string>",
      "last_name": "<string>",
      "middle_name": "<string>",
      "phone_number": "<string>",
      "additional_phone_number": "<string>",
      "email": "<string>",
      "date_of_birth": "2023-12-25",
      "gender": "male",
      "address": "<string>",
      "address2": "<string>",
      "city": "<string>",
      "state": "alabama",
      "zip": "<string>",
      "external_id": "<string>",
      "comments": "<string>",
      "workflow_stage_id": "<string>",
      "assigned_user_id": "<string>",
      "tags": [
        "<string>"
      ],
      "referral": {
        "physician_name": "<string>",
        "physician_email": "<string>",
        "physician_phone": "<string>",
        "physician_fax": "<string>",
        "physician_group": "<string>",
        "physician_npi": "<string>",
        "icd_codes": [
          "<string>"
        ],
        "service_types": [
          "medical_care"
        ],
        "start_date": "2023-12-25",
        "end_date": "2023-12-25",
        "location_id": "<string>"
      }
    }
  ]
}
'

{
  "created_count": 123,
  "patient_ids": [
    "<string>"
  ]
}