I see a therapist and a pdoc. Until I started posting here, I had never heard of a pdoc giving therapy.

I can see some benefits in having your pdoc give you therapy. One of those benefits is what you already stated -- "better understanding". It also means you'll be checking in with him more often, which implies that he can better assess your medication regimen.

I don't think he'll constantly change your meds, though. I can't see him being any different from a regular pdoc who doesn't do therapy. There's a difference between life struggles (e.g., something bad in your life happened) and neurochemical imbalances (e.g., feeling depressed for no reason). He's probably well rounded enough to know the difference.