Healer, East German, initially enrolling on course (9)
I believe the answer is:
osteopath
'healer' is the definition.
(I know that osteopath is a type of healer)
'east german initially enrolling on course' is the wordplay.
'east german' becomes 'ost' ('east' in German).
'initially' suggests taking the first letters.
'course' becomes 'path' (path can mean a route or course).
The first letters of 'enrolling on' is 'eo'.
'ost'+'eo'+'path'='OSTEOPATH'
(Other definitions for osteopath that I've seen before include "Therapist who manipulates and massages" , "One giving treatment" , "Shoot a pet (anag) - healer" , "Bonesetter" , "Therapist who manipulates bones and muscles" .)