Snowy,
At my first OB appointment all they did pretty much was give me my bounty bag (bag full of free sample goodies) talked to me about the hospital a little bit, took my blood pressure, weighed me, booked my blood work and u/s and that was pretty much it. It was only with a midwife and i didnt see a doctor. They need to see you though so they can schedule you for the birth i was told.
It took about 20 minutes for me. They've all been significantly shorter since then though!!
:P