The state Medical Examining Board on Tuesday fined an Oxford doctor $10,000 for fraudulently using another doctor’s name and Drug Enforcement Agency registration number to prescribe controlled substances to a family member. In addition to the fine, board also voted unanimously to reprimand the medical license of the doctor, Marc D. Legris, and ordered him to take a course in ethics and to practice in a supervised office setting. The order does not indicate the name of the doctor that Legris used. In a consent order approved by the board, Legris chose not to contest the allegations. Department of Public Health records show that in August 2021, Legris surrendered his own DEA registration and Connecticut controlled substance credential.