Instructions: In this task you are given a Chinese paragraph related to a criminal case, your job is to give an answer of what the criminal charge is. Take note a) if there are multiple charges only one needs to be outputted b) the criminal charge should be in Chinese. 
Input: 上海市浦东新区人民检察院指控，被告人张某某在未取得《医疗机构执业许可证》及无行医资质的情况下，因××行为先后两次被行政处罚。2014年3月20日晚，被告人张某某在上海市浦东新区三林镇久丰村桃园队徐家里82-1号私设的诊所内为患者刘某某进行非法诊疗活动时，被公安人员当场查获。被告人张某某到案后，如实供述了上述犯罪事实。
Output:
非法行医