Mass General Brigham Health Plan Chat
Welcome to Mass General Brigham Health Plan Chat!
Customer Service - 1-866-414-5533
Medicare Advantage Customer Service - 1-855-833-3668 (TTY 711)
Medicare Advantage Customer Service Hours:
October 1 – March 31, seven days a week from 8:00 AM – 8:00 PM and April 1 through September 30, Monday through Friday from 8:00 AM – 8:00 PM.Email - HealthPlanCustomerService-Members@mgb.org
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