I’ve never had anything that available (outside of urgent care which imo is not very good). None of this had an immediate need.

MRI a few years ago had a month and a half wait (not urgent but recommended).

Pediatrician? At least 3 months and thats IF they take new patients.

Allergist, 6 month waiting list.

My last PCP I had to book out 2 months in advance (the practice I wanted to go to was booked 6 months out).

We are also suburbs of a big city.