There have been several attempts to fix the ER problem over the years. I wont go into all of them, but telemedicine done right (i.e. purpose built, with features designed for this cohort) has clear potential if aligned with outcomes.
There are 74mm children in the US, which includes 45mm in low-income families covered by Medicaid or the Children's Health Insurance Program (CHIP). This means that children under the age of 18 make up over roughly 50% of all Medicaid recipients nationwide.