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

https://www.bookmark-step.win/choosing-a-medicare-broker-is-easier-when-you-can-compare-options-in-one-place

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.