I only once had a pdoc that was also providing my therapy. In my case, the therapy part was a separate day and group therapy. However, if you do the therapy and med management privately and on the same day, I think you should set aside a little time to talk about the meds, if needed. If you have nothing to discuss about the meds, then why discuss? You may need to take the lead when you want to. Or, a solution could always be that you ask your pdoc to start with "med management" talk at the very beginning of each session. It could be 10 mins or so. Then shift into therapy mode. Just an idea.

You CAN take the lead on these things.