I hear what you’re asking for, but I’m not sure of anything in particular. Mises does touch on health care in Socialism, but certainly not to the degree you’re talking about. But then again, I’m not completely sure it’s necessary…as the lessons applied in any analysis of socialism in general (about how the system is implausible and immoral, etc.) can quite easily be applied to any instance of it (like, say, in the health care industry).
And since you ask for “moral, economic, and praxeological explanations”, I’d have to say Mises’ treatise is probably the best you’ll find.
I realize you said you’ve already found a lot of Mises Daily-type stuff, but I figured I’d go ahead and add this here: