About the doctor that you love love LOVE . . . .
ask his office manager if the chaos is partly because
doctor spends a LOT of time with each patient and may be overbooked,
i.e., more patients booked than can be accommodated by the schedule.
If so, consider asking for the first appointment of the morning from now on.
Although if your doctor has rounds at the hospital,
then he probably doesn't get into the office
until later than first appointment of the day.
And, ask your doctor that you love love LOVE
who he or she recommends re OB/gyn?
And why.
Perhaps talk to your doctor about what you would __like__
of your OB/gyn -- takes time to listen, etc.
Being close to your hospital is a good thing,
especially with LA traffic.
The other hospitals you mentioned also have excellent reputations.
However, I believe Cedars-Sinai (hospital to the stars, hee hee)
has one of the best reputations in the country.
Good luck.
Remember to breathe and relax . . . when you can.