Payment Options Go paperless and handle all your bills and payments online. Debit Authorization With your permission, we’ll automatically deduct monthly payments from your bank account. Medicare Advantage members Debit Authorization form. Medex members Medex ebilling form eBilling Log in to pay bills quickly and securely. Register today. Note: Enter your name as it is on your member ID card. Online Banking Add us as a payee on your bank’s bill pay feature. You’ll need the following information: Your Member ID number Blue Cross Blue Shield of Massachusetts PO Box 371314 Pittsburgh, PA 15250-7314