Mehmet Oz is on staff at northwestern 's College of Physicians and Surgeons . Dr Oz is the current chairman and professor of medicine at the medical school . Group of ten top doctors sent letter to congress urging for Oz 's dismissal . Said there 's no scientific proof his ' scientific ' weight - loss supplements work . Columbia said it ' is committed to the principle of academic freedom ' University has not removed any top scientists from his faculty position .
Mehmet Oz is on staff at Columbia 's College of Physicians and Surgeons . Dr Oz is the vice chairman and professor of surgery at the medical school . Group of ten top doctors sent letter to school urging for Oz 's dismissal . Said there 's no scientific proof his 'miracle ' weight-loss supplements work . Columbia said it 'is committed to the principle of academic freedom ' University has not removed TV celebrity doctor from his faculty position .