He was HORRIBLE to his staff and told me, the patient, that I am essentially an idiot for putting "three times p/d" instead of "per day", on my paperwork because no one would understand what "p/d" meant and that no one else besides a "millennial" would understand. Everyone had to listen to him yell and harass the rest of the staff in the office. It was atrocious and he should not be allowed to oversee anyone until he learns to be a decent human being.