I have been doored twice in ten years and both times the driver was appropriately sympathetic and I was not hurt badly nor was my bike - it was unsettling to find that on one, the guy's door paint had actually come off on my leg but...
Having said that, and being a lawyer, if my property or any of my body parts were injured enough to cost me to replace/repair them, I would call police (who would more than likely not come out where - they often do not respond to auto accidents where I live, but I could get accident report #) and get their name, insurance, license plate info. Take photographs of injury/damage if you have camera cell phone or other like device, and call their insurance co.