Nearly half of American kids rely on Medicaid for their healthcare. So why is it so hard to find pediatricians who accept Medicaid—and what can parents do about it?

Practitioners nationwide are striving to do what’s best for children’s health, while staying supportive in the face of mistrust and confusion.

Four pediatricians said evidence-based science and medicine and a desire to keep kids healthy drives doctors’ childhood vaccination recommendations. Pediatric practices might make money providing ...