Use a nationwide directory like MyMedicareBroker.com to search for Medicare...
https://victor-wiki.win/index.php/Annual_Enrollment_Period:_What_Should_I_Prep_Before_Calling_a_Broker%3F
Use a nationwide directory like MyMedicareBroker.com to search for Medicare brokers by state or county. Verify a broker’s NPN, and check whether they offer help with Medicare Supplement, Medicare Advantage, or Part D.