Scrubs star John C. McGinley was a 'mess' filming Dr Cox's emotional return Reflecting on the latest episode of the Scrubs revival, John C. McGinley breaks down Dr Cox's emotional return. 9 April 2026 John C. McGinley was "a mess" filming his emotionally charged scenes in the Scrubs revival. John C. McGinley was a 'mess' during filming The 66-year-old actor returned as Dr Cox in episode eight for the first time since the series premiere, and in a heartbreaking moment it's revealed the character has been diagnosed with microscopic polyangiitis, an incurable autoimmune disease.