Practicing from abroad legalities

I understand the rules regarding billing CMS and being located outside the US. What I'm wondering is, can a US physician practice abroad and see patients in the US WITHOUT needing a medical license in the country they are physically located in? I imagine different countries have different laws, but does anyone know of at least some countries where a US physician could base themselves and see insurance based patients back in the US (in the state the physician is licensed in)?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Psychiatry Source Type: forums