One last character brought into hospital room as miracle-worker? (6)
I believe the answer is:
wizard
'miracle-worker?' is the definition.
(thesaurus)
'one last character brought into hospital room' is the wordplay.
'one' becomes 'i' (Roman numeral).
'last character' becomes 'z'.
'brought into' means one lot of letters goes inside another.
'hospital room' becomes 'ward' (I've seen this before).
'i'+'z'='iz'
'iz' inserted inside 'ward' is 'WIZARD'.
'as' acts as a link.
(Other definitions for wizard that I've seen before include "Magician, sorcerer" , "guide to PC" , "Man of magic" , "Great" , "Hogwarts' graduate - Super!" .)