Spiritual healer's not a proper one (6)

I believe the answer is:

shaman

'spiritual healer's' is the definition.
(a shaman is a healer)

'not a proper one' is the wordplay.
'not a proper' becomes 'sham' (sham can mean false or imitation).
'one' becomes 'an' (an apple is one apple).
'sham'+'an'='SHAMAN'

(Other definitions for shaman that I've seen before include "16 21 [INDIAN IMPORT]" , "Doctor-priest working by magic" , "religious figure" , "who practises a form of spiritualism?" , "Man of spirit" .)

I've seen this clue in The Guardian.

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