Article on bogus witch doctor (6)
I believe the answer is:
shaman
'witch doctor' is the definition.
(I've seen this before)
'article on bogus' is the wordplay.
'article' becomes 'an' (indefinite article).
'on' says to put letters next to each other.
'bogus' becomes 'sham' (I've seen this before).
'an' put after 'sham' is 'SHAMAN'.
(Other definitions for shaman that I've seen before include "Doctor-priest working by magic" , "Man of spirit" , "Tribal medicine man" , "Asian doctor-priest" , "who practises a form of spiritualism?" .)