A nationwide directory like MyMedicareBroker.com can help you search for a...

https://tiny-wiki.win/index.php/How_to_Verify_a_Broker_Listing_When_the_Site_Says_%E2%80%9CLicensed%E2%80%9D

A nationwide directory like MyMedicareBroker.com can help you search for a Medicare broker by state or county. Check the broker’s NPN to verify their credentials, then ask whether they work with Medicare Supplement, Medicare Advantage, and Part D plans.