No Dr office will notify patients of delays because that will just spiral into more delays. We all hate but there's a reason they never call you that theyr running late.
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1. It depends on how long the delay is.if it's an hour they'll be pretty happy if the waiting room doesn't become overloaded.
2. I'm sure that an obstetrician's office would love such a feature when the Don needs to run to the hospital.
3. My dentist ( which can sometimes have very long delays) we call beforehand and they tell us