I was at the doctor's office seven times last month. It's mandatory to wear a mask on the premises at all times. There is signage on the front door you can't miss saying as much, signage everywhere inside including in the exam rooms to not take it off during your exam.
Just about every time I was there someone walked in not wearing a mask (and no it wasn't because of a medical condition that prevented them from wearing one).
Also, one of the times I was there a woman walked in saying that she needed a COVID test because of some symptoms she was showing, but she was turned away by other offices/clinics telling her she wasn't supposed to be there. She thought the COVID testing place was closed or something. Apparently phones and the Internet haven't been invented yet.