2025 DePauw Low Rx Option Express Scripts Medicare Part D Plan Deductible: $590 Copay: Retail (31 Days) Mail Order (90 Days) Tier 1: Preferred Generic 15% 10% Tier 2: Generic 15% 10% Tier 3: Preferred Brand 30% 25% Tier 4: Non-Preferred Brand 30% 30% Tier 5: Specialty 25% 25% Out of Pocket Maximum : $2,000