The Medicare Annual Election Period, or the fall Medicare enrollment period, is from Oct. 15th - Dec 7th. Plan changes made during this time will generally go into effect on Jan 1st 2024. Here is what you CAN do during this time frame:
1. Change your Part D drug plan or enroll in a Part D plan
2. Change your Medicare Advantage Plan, or enroll in a Medicare Advantage Plan (Part C)
3. Drop your Medicare Advantage Plan and return to Traditional Medicare

Here is what you CANNOT do (in most states):
1. Change your Medicare Supplement Plan without passing through medical underwriting (Medicare Supplements can be changed year round, and usually medical underwriting/health questions will apply).
2. Apply for Parts A or B if you missed your initial enrollment window and do not qualify for a Special enrollment period.

Video Resources:
Medicare Advantage vs Medicare Supplement:    • Medicare Advantage vs Medicare Supple...  
Why are Medicare Advantage Plans $0/month?:    • "Free" Medicare Advantage? The Truth ...  
How to find the best Part D Plan for your needs: https://www.abtinsuranceagency.com/fi...
OR
   • Medicare Part D Plan Finder Tool