Visit nurse after a time (6)
I believe the answer is:
attend
'visit' is the definition.
(I've seen this before)
'nurse after a time' is the wordplay.
'nurse' becomes 'tend' (I've seen this before).
'after' means one lot of letters go next to another.
'time' becomes 't'.
'a'+'t'='at'
'tend' after 'at' is 'ATTEND'.
(Other definitions for attend that I've seen before include "Watch" , "take heed" , "Take part in" , "Go regularly to (school)" , "Frequent" .)