Appeals & Grievances
As a Blue Cross Blue Shield of Massachusetts Medicare plan member, you have a right to a formal review if you disagree with any decision we have made.
Learn About Your Rights
You can file a complaint if you have concerns or problems relating to your:
- Medicare Advantage Part C medical care plan
- Medicare Advantage Part D prescription drug plan
- The service you receive
You can also request to get a total number of appeals, grievances, and exceptions that members have filed against our plan in the past.
To get this information, call Member Service at 1-800-200-4255 (TTY: 711)
April 1 – September 30
8:00 a.m. - 8:00 p.m. ET
Monday through Friday
October 1 – March 31
8:00 a.m. - 8:00 p.m. ET
Seven days a week
