This in particular is about Hannah going yesterday for a checkup and being given a lecture by a young lady doctor about What Catholics Believe And Why It Is Wrong about contraception and other related teachings.
Hannah was able to say, "No" ..."Wrong." ... "The priest that said that was wrong." ... "Those deacons were wrong too." And so forth, without being yanked into this doctor's stream of misinformation.
In particular, if you are a doctor I am sure that ladies of any religious persuasion would appreciate you understanding what you are talking about if you decide to undertake a lecture upon what their faith teaches. If not, then please just keep it to the basics.
To do otherwise conveys not only your own lack of education but also gives the unflattering impression that you believe your patient lives with a sack over her head and has just removed it to step into your office. If you do this in a condescending tone, then you also are making yourself obnoxious to your patient who is at your mercy at that point. Is this really what you took the Hippocratic oath to do?
The "if you have any questions or change your mind about that then let me know ... " speech has never gone amiss.
If you are the patient, then "buyer beware."
If you know your faith then you can sort through what you are told "everyone knows" as well as avoiding being led into error by well intentioned doctors. Or indeed by anyone. (Yes, we are going to say "well-intentioned" because we are practicing charity in not attempting to read any obnoxious doctors' minds.)
For those interested, the basic answers about the issues upon which Hannah was being "instructed" are in the Catechism.