Reagan was the one who brought socialized health care to America. He passed a law saying that hospitals couldn't refuse emergency treatment due to inability to pay. So uninsured people wait until their conditions are bad enough to be considered an emergency, and then show up at the ER. So hospitals have to jack up their rates for everybody to cover the cost of emergency treatment of the uninsured. Expensive treatment that would likely be much cheaper if treated before it became an emergency.
So this Trump move won't save you money, it just changes how you pay.