Use a nationwide directory like MyMedicareBroker.com to search for a Medicare...

https://shanesexpertinsights.inkharbory.com/posts/how-to-find-a-broker-who-specializes-in-medicare-advantage-plans

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