He provides a fresh setting for the doctor (6)
I believe the answer is:
andrew
'he' is the definition.
(I've seen this before)
'a fresh setting for the doctor' is the wordplay.
'fresh' becomes 'new' ('new' can be a synonym of 'fresh').
'setting for' means one lot of letters goes inside another.
'the doctor' becomes 'dr' ('Dr' can be a synonym of 'doctor').
'new' going around 'dr' is 'ndrew'.
'a'+'ndrew'='ANDREW'
'provides' acts as a link.
(Other definitions for andrew that I've seen before include "Scotland's patron saint" , "apostle" , "November thirtieth is this saint's day" , "Warden (anag.)" , "- Marvell, seventeenth century poet" .)