And Madge's mom has fancier drugs than anyone else in Twelve. Like everything else distributed by the Capitol, what and how much you get is chosen to promote loyalty and division.

I think Two probably gets really excellent medical care, if only because the Capitol wants loyal Twos to feel valued and above the other district citizens (and with the number of retired Peacekeepers floating around, they are definitely aware of what other districts get). So, better equipment/drugs and better staff. In addition, a certain number of Peacekeepers probably train as medics so that their colleagues don't need to return to Two for anything but major injuries (getting treatment from the locals would be too likely to compromise their loyalty); that training would also require a better medical infrastructure. I don't think they have the topnotch cosmetic stuff like the Capitol, but I wouldn't think that general medical care is at all lacking.