I believe you need to be receiving Disability. Or be over the age of 55? Not sure. I have Medicaid because I receive Disability, I am 42.
It varies by state. In some states you can qualify by having low income, others low income and few assets, and with some states you can qualify by health conditions. Enter "Medicaid your state" into your favorite search engine. It will pull up the website for your state's Medicaid office. Most states have the qualifications online, and most also have the application online.
You fill out the application. It's based on household income and the number of people who live in the house.
do you mean a link card? look it up on google! it never lies!
Contact Social Services and apply. Low Income with children