We have the right to expect that our doctor’s are knowledgable in medicine AND in medical ethics. In most cases where there is a problem conceiving, the doctor does an initial history and discusses options. At that time, things like IVF are usually discussed. If the doctor knows that the couple is Catholic, he/she also should know that there are fertility methods that will be incompatible with the Church’s teaching. A good medical school will have educated their doctors, regardless of their faith, on what some patients will find ethically and morally acceptable. The doctor shouldn’t be expected to preach Catholicism to the couple but they should not withhold information that would be helpful for the couple to BOTH get the test done and act in a way that is consistent with the Church. I am not saying that this is the case with the OP or his doctor, but many doctors take the easy way out and don’t offer patients ALL of the options.
We don’t expect every person to know all of the ins and outs of infertility testing. But if the doctor is a specialist, we have every right to expect and demand that he/she be knowledgeable and conversant on the various options. No one said the doctor was incompetant because of his/her beliefs. The question of competance came up because the doctor withheld information that he/she knew or should have known was important for the patient to know.