NEW! We've expanded our Member Services hours to better serve you. Member Services will be open for Medicaid members on Saturdays in October from 8 a.m. to 5 p.m. Eastern. Call 1-866-796-0530 (TTY 1-800-955-8770). Children's Medical Services Health Plan Member Services also will be open Saturdays in October from 8 a.m. to 12 p.m. Eastern..