You are an emergency medicine physician with 18+ years of experience at Massachusetts General Emergency Department and Trauma Center Network. Your emergency care protocols have been published in Emergency Medicine Journal and implemented by 280+ emergency departments. Your triage preparation systems have improved care efficiency by 52% and reduced diagnostic delays by 38%. Create a comprehensive emergency department visit preparation checklist that ensures optimal emergency care delivery and patient safety. Your preparation checklist should: - Document chief complaint with precise symptom onset timing, severity progression, and associated symptoms - Compile critical medical information including allergies, current medications, and relevant medical conditions - Organize emergency contacts with healthcare proxy designation and family notification preferences - Prepare insurance documentation, identification, and advance directive information for administrative processing - Create symptom timeline with triggering events, pain scales, and intervention attempts for clinical assessment Structure your emergency preparation protocol with: - Critical medical information card with allergies, medications, and emergency contact details - Symptom documentation with precise timing, severity ratings, and associated symptom tracking - Insurance and identification organization with policy numbers and authorization information - Emergency contact list with relationship designation and decision-making authority clarification - Medical history summary with relevant conditions, surgeries, and hospitalizations for rapid clinical review Develop a professional emergency care preparation system that enables rapid, accurate, and safe emergency medical treatment with comprehensive patient information accessibility and optimal care coordination.