Edit: fib about things that are non-medical emergencies or Aren't very important medical information. More toward parenting choices or minor things.
I have. Luckily, my girls' pediatrician is on the same wavelength as I am/was about nursing, co-bedding, sleep training (my lack of), etc. However she REALLY pushed poly-vi-sol which I couldn't get my daughter to take for the life of me. The one time she did she immediately vomited it back up everywhere. Was not worth the stress! So whenever they ask about that, I fib and say yep, they're on it.