Use a nationwide directory like MyMedicareBroker.com to search for brokers by...

https://victor-wiki.win/index.php/MyMedicareBroker.com_vs._Carrier_Websites_for_Finding_an_Agent

Use a nationwide directory like MyMedicareBroker.com to search for brokers by state or county. Verify a broker’s NPN, and check which services they offer: Medicare Supplement, Medicare Advantage, and Part D.