How do i contact the medicare administration? If you have further questions or concerns, contact the Medicare administration directly at 1-800-MEDICARE (1-800-633-4227).What is the phone number for medicare customer service? Remember 1-800-MEDICARE. If you have further questions or concerns, contact the Medicare administration directly at 1-800-MEDICARE (1-800-633-4227). For technical assistance relating to MyMedicare.gov only, call 1-877-607-9663. For all other issues concerning Medicare, you should call 1-800-MEDICARE (TTY: 1-877-486-2048).How do i get in touch with medicare? For specific billing questions about claims, records, and expenses. MyMedicare.gov. Phone number for general questions. 1-800-Medicare. (1-800-633-4227) Phone number to replace a lost Medicare Card. 1-800-772-1213. Mailing Address. Medicare Contact Center Operations.Can i speak to a medicare representative by phone? Some people may prefer to speak to a Medicare representative over the phone, and some actions may require you to do so. The official phone number for Medicare is 1-800-MEDICARE (1-800-633-4227), TTY 1-877-486-2048. You may call Medicare 24 hours per day, 7 days per week, and help is available in both English and Spanish.