HIPAA-Compliant Patient Data Anonymization Spreadsheet Pipeline

Create a Python script using pandas and openpyxl that automatically sanitizes patient spreadsheets by removing personally identifiable information (PII). The script must implement k-anonymity principles, replacing direct identifiers with randomized tokens while preserving statistical integrity. Include robust error handling for different Excel formats, logging of anonymization processes, and a configurable anonymization threshold that can be adjusted based on specific HIPAA compliance requirements.