Is it normal for a plastic surgeon to never take measurements before a breast augmentation surgery?

Although not mandatory, measurements can be very helpful.  Most surgeons find them extremely useful when planning for breast augmentation. Not only do do they assist with choosing the right implants but can also point out asymmetries of the breast which are quite common. 

I personally take measurements. That gives me the most accurate assessment and most appropriate implant selection, as well as placement,etc.