Is medical care a right???

The commodity vs right argument about medical care is irrelevant. Medical care is a service or good that has to be produced or provided by somebody so when you're exercising your right to demand it (or the government for you) you're impinging on someone else's right to his own time and labor. So you have a right to purchase medical care but not to demand it for nothing.

What does it even mean to say that medical care is a right? Does that mean that you have a right to anything you wish -- an MRI whenever you want it? And don't providers of medical services have rights? And don't you have the right to decide whether or not to buy medical insurance and what kind to buy if you want it? And what kind of right is it where the government can tell you how much you can have and when you can have it.

I think we'd better stick to the original idea of the founders about "rights". That they are for protection of the individual from tyranny of the government or the majority, not the FDR variety that government is supposed to provide. That sounds pleasant but doesn't really make sense if you think clearly about what the government really is.

The business of calling medical care a basic human right  is just a tricky way of avoiding arguments about the issues. Very few are disagreeing that those who cannot or will not arrange to purchase medical care for themselves shouldn't be given at least the basics and even more if they really need it. The argument is about the best way to do it. Calling medical care a basic human right is just a shorthand argument for government control and central payer and it's no argument at all, just a semantic trick.