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

https://stateofseo.com/how-to-find-a-broker-who-focuses-on-part-d-only/

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.