Did the Buddha ever cure someone? Perhaps you could say that by teaching his path he healed many people; but what I meant is more direct, physical healing: is there something written about that?
This article Ministering to the Sick and the Terminally Ill contains examples (references to suttas and the vinaya), certainly of caring for or ministering to people who are physically unwell.

There are also some accounts of people being "healed": see for example the paragraphs which begin,


  It seems that those who are highly developed mentally are able to suppress illness ...


See also the paragraph which begins,


  The advice given by Nakulamata to Nakulapita ...