– Are medical prescriptions for medical imaging or physiotherapy sessions written by physicians who are based outside of the United States recognized in the United States?

Are medical prescriptions recognized by physicians established outside the United States in the United States?

I am interested in medical imaging (eg MRI or X-ray) and physiotherapy sessions. (See this question regarding prescriptions for medicines.)

Recognition (or lack of) can take place at various levels, such as: Federal laws, state laws, doctors or health insurance.

Example of an MRI prescription (source):

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