Walk to have beer with doctor (5)
I believe the answer is:
amble
'walk' is the definition.
(amble is a kind of walk)
'beer with doctor' is the wordplay.
'beer' becomes 'ale' (I've seen this before).
'with' indicates putting letters inside.
'doctor' becomes 'mb' (Bachelor of Medicine, Medicinae Baccalaureus**).
'ale' placed around 'mb' is 'AMBLE'.
'to have' is the link.
(Other definitions for amble that I've seen before include "promenade" , "Go at a leisurely gait" , "Walk at an easy pace" , "Walk in a leisurely way" , "Blame for leisurely walk" .)