In a physical sense, yes, but this is where the law clashes a bit with practical reality. You can set up the hospitals federally using paragraph (g), but how are you going to staff them and integrate them into the health system so that, for instance, you have somewhere to discharge those patients as they get better? This is not a power that could be exercised without some co-operation from the province.
On the other hand, Mr. Davies, you mentioned the cordon sanitaire. That's something that can be done by the federal government instantly, and ought to be.
For some of these other powers in the Emergencies Act, yes, you could use them, but they will take greater integration with the province.