A former insurance agent, Mike Harper, who is battling cancer, is urging seniors to reconsider enrolling in Medicare Advantage plans as the open enrollment period begins. Harper warns that significant changes in 2025 will lead to higher out-of-pocket costs, higher prescription drug deductibles, and the discontinuation of many current plans, affecting over 1.8 million members. He emphasizes the importance of understanding options and urges seniors to review their coverage carefully before the December 7 deadline to avoid automatic re-enrollment in traditional Medicare. Harper has expressed his wish to educate seniors about potential pitfalls in the Medicare Advantage system as he steps back from his work due to health issues.