You do realize that in order to interpret imaging for a US based patient, any physician needs to have a US medical license?

Any physician with a medical license in the US can sign off on an Indian physician's work. Or hundreds of them.

This already does happen for nighthawk coverage for example where a non-US radiologist will provide a wet read and then a US rad will sign off. The US rad will always bear the liability however.

States give out driver licenses and licenses for trucking they'll give out medical licenses soon too.