Why Boston's Hospitals Were Ready
newyorker.com
newyorker.com
They also simultaneously have an exercises with all of the local hospitals and other medical facilities. They all run their disaster plans and practice triage, reporting available surgical beds / trauma units, etc. The bigger hospitals actually handle some of the mock patients from the scene, but even small day surgery facilities take part in at least a paper exercise, since they could be tremendously useful in a real event.
Here's a decent news report about last year's drill here: http://www.abcactionnews.com/dpp/news/health/hospital-staff-...
E.g. at the other end of the scale, at the opposite end of tow is the local college with has a nursing program ... and for some inexplicable reason every bed in every room is fully functional once you remove the training dummy (12 to 20 or so). A pharmacist and some junior associates shows up from fairly far south of the city and set up a pharmacy. It was discovered that dental chairs for that training program were rather good for setting bones. Etc.
Or something closer to home: there's a state association of structural engineers, which had a plan for this sort of thing, and marshalled over a hundred to get the not so destroyed buildings graded in a very short time (as in "safe" to "stay out").