Feb 24, 2022 · Aetna SilverScript Prescription Drug Plans (PDPs) 1-866-235-5660 (TTY: 711) 7 days a week, 8 AM to 8 PM. 2019 and earlier (non-SilverScript) Prescription Drug Plans (PDPs) 1-877-238-6211 (TTY: 711) 7 days a week, 24 hours a day. Medicare Supplement. 1-888-624-6290 (TTY: 711) 7 days a week, 7 AM to 8 PM CT..