From politifact:
Our ruling
Perry said Trump is "for single-payer health care."
Fifteen years ago, Trump was decidedly for a universal healthcare system that resembled Canada’s system, in which the government pays for care for all citizens. Recently, he's said he admires Scotland’s single-payer system and disses the Affordable Care Act as incompetently implemented.
However, a Trump spokesman denied that the candidate supported "socialized medicine" and suggested Trump prefers a "free-market" solution. Other than that, though, the Trump campaign has been silent about what his specific health care policies are; perhaps Trump will be pressed on this point during the Aug. 6 debate.
Given the current evidence, Perry's attack is partially accurate, but leaves out details. We rate the statement Half True.
My "ruling" is that Trump is a dangerous ego-maniac and we need to do everything we can to ensure he isn't elected to government.