Assume it's the same doctor for now, I can ask Dr. Scarpa in a bit.

[Alucard turns so that he's leaning against the lab's workbench, arms folded across his chest. There have to be other factors....]

They're in the same hospital because of a shared geographic region of the city, but that makes me wonder if the shared geography goes beyond just this hospital's jurisdiction. Is there a common neighborhood at hand?