This report summarizes first-hand accounts of seniors’ Medicare private plan decision making strategies, based on focus groups conducted in four cities. Seniors found the initial plan selection process overwhelming due to the volume of information they received and their inability to organize it. Few used the government’s online comparison tool, and those that did cite several shortcomings. Many relied on advice from sources they trust, including insurance agents, plan representatives, friends, family members, doctor’s offices and pharmacists. After they enroll in a plan, many seniors did not revisit their initial decision or review plan options without the strong provocation of a substantial increase in cost, change in coverage, or shift in personal health care needs. Moreover, they feared that a change in plans may disrupt their care, or lead to an unforeseen increase in out-of-pocket costs, and require them to learn new rules and requirements. They are doubtful they would end up in a plan that is appreciatively different or better for them. Overall, seniors preferred to have numerous choices in plans but would like personalized help and advice from experts to ease the process.