Medical specialist accepts Euro, logistically it's essential (9)

I believe the answer is:

urologist

I'm a little stuck... Click here to teach me more about this clue!

'medical specialist' is the definition.
(I know that urologist is a type of medical specialist)

'accepts euro logistically it's essential' is the wordplay.
'UROLOGIST' is hidden within the letters.
However, I'm uncertain how the hidden word is indicated.

Can you help me to learn more?

(Another definition for urologist that I've seen is " Doctor specialising in the waterworks?".)

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

Want a hint initially instead of a full solution? Install my app