A method and apparatus for securely transferring medical information is provided, which included storing information relating to a medical prescription item on a smart card using an encryption method that provides independent verification as to the source of the information, verifying the source of the information by the provider of the medical prescription item and modifying the stored information relating to the medical prescription item when the prescription is filled, and storing the modified information on the smart card using an encryption method that provides independent verification of the source of the modified information.