Unless he is a newbie, any seasoned (or rather experienced) provider is savvy in approaching $$$ topic. If he didnt mention it, then highly likely all good. In this context, he is the businessman whilst you are the customer. He knows better IMO.
Thanks gents. I am taking PreP but have personal policy of not hiring providers who is not on PreP. However i notice that many interesting providers not disclosing their PreP status on their ads. I guess I have to just either not hire them or query them separately.