My pdoc charges $180 for 20 minutes, but I only have a $20 copay. So from my experience, $1000 per visit seems extremely high. Even my intake session, which was the most expensive session of all, cost me $250/hr when I had a deductible.
I hope you do get a real answer because I agree that $1000 for a 20-minute session is EXTREMELY suspicious. Something isn't right, especially with two separate charges.
Let us know what your pdoc's "answer" is. I'm sorry you have to deal with this bullsh_t.