A doctor has shared a shocking story of how UnitedHealthcare stopped a cancer surgery to ask if it was medically necessary in a new Instagram video. Elisabeth Potter, a doctor based in Austin, Texas, created a video on Instagram detailing her experience treating a cancer patient and what she said were the roadblocks UnitedHealthcare put up during a surgery procedure. UnitedHealthcare told Newsweek: 'There are no insurance related circumstances that would require a physician to step out of surgery and it would create potential safety risks if they were to do so.'