Use a nationwide directory like MyMedicareBroker.com to find a Medicare broker...

https://station-wiki.win/index.php/How_to_Read_a_Medicare_Broker_Profile_Before_Booking_a_Call

Use a nationwide directory like MyMedicareBroker.com to find a Medicare broker by state or county. Verify the broker’s NPN, then ask whether they help with Medicare Supplement, Medicare Advantage, and Part D plans.