curl --request GET \
  --url https://api.penciled.com/v1/patients \
  --header 'Authorization: Bearer <token>'

{
  "patient_id": "123456789",
  "healthie_patient_id": "123456789",
  "first_name": "John",
  "last_name": "Doe",
  "provider_ids": [
    "1234",
    "5678"
  ],
  "provider_names": [
    "Provider 1",
    "Provider 2"
  ],
  "available_dates": [
    "2024-12-05T00:00:00.000-08:00",
    {
      "startDate": "2024-12-05T09:00:00.000-08:00",
      "endDate": "2024-12-05T12:00:00.000-08:00"
    }
  ],
  "appointment_type_ids": [
    "1234",
    "5678"
  ],
  "appointment_type_names": [
    "Appointment Type 1",
    "Appointment Type 2"
  ],
  "group_id": "1234567890",
  "group_name": "Group Name"
}