Knock, Knock.

I'm waiting for that knock on the door:  "The  dentist/endodontist/oral surgeon is here and would like to take care of that tooth that's been bothering you for about five years now."   Knock, knock:  "The orthopedic surgeon would like to evaluate that difficulty with your knees."   Knock, knock:   "The urology/nephrology team is here, ready to rid you of that persistent kidney stone malady."   No knock on the door--no resolution of the problem.