Medicaid is based on ones income level. Both state and federally funded to help those in a low income level or maybe no income.
Medicare is federally funded and is for retirees aged 65 and up and younger people with certain conditions. The cost varies monthly or even quarterly, I am not sure, but it’s around $165 a month. I’ll find out in three years. But Medicaid and Medicare are completely separate
Elite Visa helps if you can afford it. Maybe check in with your home country embassy to find out more. Health coverage if you plan on staying long term is a must. Border runs if in doubt. I’m planning a long term retirement myself so I’ll be following