Well-behaved hospital attendant (7)
I believe the answer is:
orderly
I believe this is a double definition.
'well-behaved' is the first definition.
(thesaurus)
'hospital attendant' is the second definition.
(I've seen this before)
(Other definitions for orderly that I've seen before include "Methodical, like soldier servant" , "in a mess? No" , "Soldier with special duties - hospital attendant" , "An officer's servant, tidy chap" , "Hospital attendant; well behaved" .)