Choosing a Medicare broker starts with checking credentials and finding someone...

https://tango-wiki.win/index.php/How_to_Pick_a_Medicare_Broker_If_You_Travel_Between_States

Choosing a Medicare broker starts with checking credentials and finding someone who serves your area. MyMedicareBroker.com lets you verify an NPN and search by state or county. Brokers may help with Medicare Supplement, Medicare Advantage, and Part D.