Enrolling in Medicare is not mandatory, but it is strongly recommended unless you have other qualifying health insurance coverage. Delaying enrollment without other coverage could result in penalties and higher costs. If you have worked for at least 10 years in the U.S., Part A is typically premium-free. Additionally, if you're receiving Social Security benefits, you'll be automatically enrolled in Medicare Part A when you turn 65.Ensuring you understand your Medicare eligibility and the options available to you can help you make informed decisions about your healthcare coverage as you age.