Noted Forster in hospital department (7)
I believe the answer is:
eminent
'noted' is the definition.
(I've seen this before)
'forster in hospital department' is the wordplay.
'forster' becomes 'em' (I've seen this in other clues).
'hospital department' becomes 'ent'.
'em'+'in'+'ent'='EMINENT'
(Other definitions for eminent that I've seen before include "Respected; notable" , "Outstanding or distinguished (7)" , "Noted" , "Lofty; famous" , "Important" .)