invokes TouchWorksMagicConstants.ACTION_GET_PATIENT_INFO action
        :return: JSON response

def get_patient(self, ehr_username, patient_id):
        """
        invokes TouchWorksMagicConstants.ACTION_GET_PATIENT_INFO action
        :return: JSON response
        """
        magic = self._magic_json(
            action=TouchWorksMagicConstants.ACTION_GET_PATIENT_INFO,
            app_name=self._app_name,
            user_id=ehr_username,
            token=self._token.token,
            patient_id=patient_id
        )
        response = self._http_request(TouchWorksEndPoints.MAGIC_JSON, data=magic)
        result = self._get_results_or_raise_if_magic_invalid(
            magic,
            response,
            TouchWorksMagicConstants.RESULT_GET_PATIENT_INFO)
        return result