Spurious article required by medicine man (6)
I believe the answer is:
shaman
'medicine man' is the definition.
(I've seen this before)
'spurious article required' is the wordplay.
'spurious' becomes 'sham' (I've seen this in another clue).
'article' becomes 'an' (indefinite article).
'required' means one lot of letters go next to another.
'sham'+'an'='SHAMAN'
'by' acts as a link.
(Other definitions for shaman that I've seen before include "Sorcerer" , "16 21 [INDIAN IMPORT]" , "Spirit guide" , "who practises a form of spiritualism?" , "Man of spirit" .)