To become a PA in the United States, individuals must also attend and graduate from an ARC-PA–accredited entry-level PA program and pass the Physician Assistant National Certifying Exam (PANCE) administered by the National Commission on Certifying of Physician Assistants (NCCPA).
For information on PA programs contact the Physician Assistant Education Association (PAEA). Eligibility criteria for taking the Physician Assistant National Certifying Exam (PANCE) are available on the NCCPA web site.
Additional information on practicing as a PA in the US can be found at the American Academy of Physician Assistants’ (AAPA) web site.
To determine if an individual state allows non-US educated physicians to practice as PAs without additional education and national certification, you would have to contact the licensing bodies of the specific states.