He previously underwent open-heart surgery in 2009 to replace an aorta and fix a leaky heart valve.
Thompson’s brother confirmed the news with a post on Instagram, which he captioned “My Big Brother!
God is with you.
Credit: Scott Garfield/NBCU Photo Bank
I will miss you.”
Mekhi Phifer, who joined the series in 2002, also shared a tribute.
What a special spirit we have all lost!
he wrote on Instagram.
Since the first day I met him on the set ofERhe absolutely made me feel at home and welcomed.
My brother will forever be missed!
Many condolences to his friends, fans and family.
ERproducer Neal Baer also shared his condolences on Twitter, calling Thompson “wonderful to work with.”
