Use a nationwide directory like MyMedicareBroker.com to find a Medicare broker...

https://shed-wiki.win/index.php/What_Does_%E2%80%9CVerified_Credentials%E2%80%9D_Protect_Seniors_From%3F

Use a nationwide directory like MyMedicareBroker.com to find a Medicare broker by state or county. Verify the broker’s NPN, then ask whether they help with Medicare Supplement, Medicare Advantage, and Part D plans.