I'm 35 but I've got a 100% total and permanent disability rating. Can I get on Medicare?
Yes, Medicare is available to you once you are approved for the SSDI benefit. Please click https://www.vawatchdog.org/social-security-and-medicare-benefits.html
To be awarded the SSDI benefit isn't as simple as applying for it. The rules are different than those at your VA and even a veteran with a 100% VA rating may not qualify at the SSA. Good luck!