Use a nationwide directory like MyMedicareBroker.com to search for a Medicare...

https://wiki-view.win/index.php/Can_I_Search_MyMedicareBroker.com_by_State_and_County%3F

Use a nationwide directory like MyMedicareBroker.com to search for a Medicare broker by state or county. Verify the broker’s NPN, then ask whether they cover Medicare Supplement, Medicare Advantage, Part D, or all three.