Overview
- He died Thursday, Feb. 19, according to a family statement that said he spent his final days with friends, his wife Rebecca Gayheart, and daughters Billie and Georgia, and asked for privacy.
- Most outlets report his age as 53, though a few early stories listed 52.
- He disclosed an ALS diagnosis in April 2025 and worked with groups such as I AM ALS while meeting lawmakers in Washington to push for research.
- He was best known as Dr. Mark “McSteamy” Sloan on Grey’s Anatomy and Cal Jacobs on HBO’s Euphoria, and he later portrayed an ALS patient in a 2025 guest role on NBC’s Brilliant Minds.
- Tributes from colleagues and friends, including Patrick Dempsey, Kevin McKidd, Sam Levinson, Ashton Kutcher, and Alyssa Milano, praised his talent and advocacy.