Roger
Read 517-45
In the 2002 n.f.p.a. nec code handbook .
Says 517-3- thru 35 only apply where electrical life support is required. So if the dialylis machines have battery back up???. The reference to the Gen. was not on this subject. Just a note to let you know one was on site not just battery backup.
It all depends on the level of care.