Everything I've seen is that in America (Canada unfortunately has changed), ONLY OB/GYNs are ethically required to give abortion referrals. Doctor Carson has never practiced in this field.
Then with your second statement this would mean that your Primary care doctor doesn't have to refer you to a specialist if he feels the procedure is not necessary. So, no referrals to a dermatologist if your doctor doesn't think you child's acne isn't that bad, no referral to a plastic surgeon? How about a denist who thinks orthdonics is a cosemetic proceedure?
Again, find me a case with a live baby where an abortion is MEDICALLY NECESSARY.
For your consideration. Ectopic Pregnancy WebMD
Ectopic Pregnancy - Mayo Clinic
This happen to friends of mine, very sad after several attempts to get pregnant.