[falsestprophet]

"…the service specializes in things like annual checkups, flu shots, and blood tests… not just time-sensitive urgent care issues."

These tasks are generally left to physician assistants and nurse practitioners who are paid on average about half as much as primary care physicians (about 100k vs 200k).

In many states, they can be found practicing in pharmacies and supermarkets and seem to see around a half dozen patients per hour.

I think it will be tough for mobile medical practitioners to beat price/convenience levels of retail nurse practitioners and physician assistants.