One who treats metabolic disorders or leg conditions perhaps (15)

I believe the answer is:

endocrinologist

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'one who treats metabolic disorders' is the definition.
The definition suggests a singular noun which matches the answer.

'or leg conditions perhaps' is the wordplay.
'perhaps' is an anagram indicator.
'or'+'leg'+'conditions'='orlegconditions'
'orlegconditions' anagrammed gives 'ENDOCRINOLOGIST'.

Can you help me to learn more?

(Other definitions for endocrinologist that I've seen before include "Medical expert" , "Hormone expert" .)

I've seen this clue in the Sydney Morning Herald.

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