Use MyMedicareBroker.com to search for a Medicare broker by state or county....

https://www.bookmark-url.win/choosing-a-medicare-broker-is-easier-when-you-know-what-to-check-use

Use MyMedicareBroker.com to search for a Medicare broker by state or county. Verify the broker’s National Producer Number (NPN), then ask whether they cover Medicare Supplement, Medicare Advantage, Part D, or a combination.