I don't think that's a stupid question
I wouldn't mind some thoughts on that, too. When I got the 2NL, I called the number for one of the Melbourne clinics that's listed on the DV site, and it was disconnected, so I googled them and called a new number, which worked. The receptionist told me they were handing visa medicals over to a different medical group, and transferred me to them. The new place didn't seem to know much about it but confirmed that they could do it, asked me when I wanted to come in, and just booked the date I asked for (exactly three weeks before my interview). So, I have a few questions: should I assume that this new medical group is approved for DV, should I be worried that they don't seem to be hugely knowledgeable, and is three weeks about right, time-wise?