The key is learning to work the phones. Once I figured out that medicine for the intern is practiced by yapping on the phone, I became the efficient tern.
Either have or have quick access to phone numbers.
Call consults early and often.
Learn how to multitask, if you are not doing atleast 3 things at the same time, then you are not doing enough(i.e paging a consultant, writing your SOAP note, and filling out PPN form)
Make nice with the nurses, and your pager will not constantly go off, for silly things, the nurse will just wait until she sees you or call you at the end of shift/late day to talk with you.
Stay on top of everything, this is were a little anal retentiveness will save you from having not one patient on your census than is needed. If the patient is to be NPO write the order, tell the patient, tell the nurse, tell the charge nurse......yep and even then one or two will slip through the cracks.
Err on the side of NPO if there is a .00000000001% chance of the upper GI being done tommorrow, you guessed NPO! You never know if a slot will open up.
Post is too long...sorry....this is tailored for the medicine tern, I have similar but a different twist for the surgery tern