The claims that could be made by such as Paracelsus (9)
I believe the answer is:
alchemist
'such as paracelsus' is the definition.
(I've seen this before)
'the claims that could be' is the wordplay.
'that could be' indicates anagramming the letters.
'the'+'claims'='theclaims'
'theclaims' anagrammed gives 'ALCHEMIST'.
'made by' is the link.
(Other definitions for alchemist that I've seen before include "St Michael in role of one turning base metal into gold" , "... seeker after stone" , "St Michael (anag)" , "one trying to find the elixir of life" , "magician" .)