I moved from Miami to Orlando and switched from Blue Cross to Aetna. Thought I had 60 days after moving, but losing Medicare coverage moving clarified it starts the day you change address. That gap cost me $300 in extra premiums—definitely a tough lesson!
https://www.mediafire.com/file/egzcp3tarmbevpt/pdf-5142-1060.pdf/file
I moved from Miami to Orlando and switched from Blue Cross to Aetna. Thought I had 60 days after moving, but losing Medicare coverage moving clarified it starts the day you change address