Healer manipulated choir, priest and player (12)
I believe the answer is:
chiropractor
'healer' is the definition.
(chiropractor is a kind of healer)
'manipulated choir priest and player' is the wordplay.
'manipulated' indicates anagramming the letters.
'priest' becomes 'pr'.
'and' is a charade indicator (letters next to each other).
'player' becomes 'actor' (synonyms).
'choir' anagrammed gives 'chiro'.
'chiro'+'pr'+'actor'='CHIROPRACTOR'
(Other definitions for chiropractor that I've seen before include "Spine manipulator" , "One who manipulates the spine" , "Joint manipulator" .)