Who Is My Medicare Carrier? 
One of the easiest ways to find out who your insurance carrier is for Medicare Advantage and / or Prescription Drug Plan coverage is through www.Medicare.gov . On the main page of Medicare.gov , click the button that says SIGN UP / CHANGE PLANS and then select Check Your Enrollment from the menu . Have your Medicare card handy . You 'll need to enter your zip code , Medicare Number , Last Name , Effective Date for Part A , Date of Birth and press the Continue Button . The next screen will display insurance carrier and plan information associated with your Medicare number . If you still have more questions regarding your Medicare insurance carrier , you can call Medicare directly at 1-800-MEDICARE . 