HIPAA-Compliant Patient Record Batch Anonymization Script

Design a Laravel-based automated script that can process large CSV files of patient records, automatically anonymizing sensitive personal health information (PHI) while maintaining referential integrity. The script must use advanced regex patterns to detect and replace names, social security numbers, and unique identifiers. Implement robust logging mechanisms to track all anonymization actions and ensure HIPAA compliance. Include error handling for different file formats and sizes, with the ability to process files up to 500MB efficiently.