My employer supplies me with emergency international medical coverage that includes medical evacuation. I have never used it, but I have seen it used for coworkers.

I don't want to get into names as I am not trying to hype a specific company. There are reputable companies that provide this kind of service.

If you want good medical/medical evacuation coverage (where you do not have pay the local medical provider and then apply for reimbursement), be prepared to pay. They are not cheap.