I've found that other than in academic settings, most PhDs in everyday life don't necessary want you to call them "Dr", unless they're douchnozzles in love with their credentials.
Having kids and taking them to Dr. appts on a regular basis, I find it hard to call somebody “Doctor” unless they are an MD that can save my kid’s life!
Which is usually manifest in the ones who are so impervious to life’s lessons that they get a 2nd PhD. The principal life lesson from getting a PhD is that it was a waste of time. I have known engineers who stand on their MSs and try to hide the fact that they got a PhD so they don’t have to explain why they chose to waste another 3 years of their lives.