curl -X GET "https://api.nevatal.com/api/v1/appointments/apt_xyz789" \
  -H "Authorization: Bearer nvtl_your_api_key"

{
  "id": "apt_xyz789",
  "patientId": "pat_abc123",
  "patient": {
    "firstName": "María",
    "lastName": "García",
    "phone": "+573001234567"
  },
  "doctorId": "usr_doctor456",
  "doctor": {
    "firstName": "Dr. Carlos",
    "lastName": "López",
    "specialty": "Odontología General"
  },
  "locationId": "loc_main",
  "location": {
    "name": "Sede Principal"
  },
  "procedureId": "proc_general_consult",
  "procedure": {
    "name": "Consulta General",
    "duration": 30
  },
  "startTime": "2025-04-01T09:00:00-05:00",
  "endTime": "2025-04-01T09:30:00-05:00",
  "status": "confirmed",
  "notes": "Initial consultation",
  "createdAt": "2025-03-20T15:00:00Z",
  "updatedAt": "2025-03-20T15:00:00Z"
}