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Dr. Dean Archer is the Head of the Emergency Department at Gaffney Chicago Medical Center. He is portrayed by Steven Weber.


Dean served in the Navy together with Ethan Choi. During Season 6 it becomes clear that he still stuggles with PTSD. He also has a severe disdain for anything to do with mental illness and psychiatry, which often puts him at odds with Dr. Charles.

Dean has a persistent habit of antagonizing everyone around him and belittling patients with psychiatric instead of purely physical symptoms, going so far as to claim that they do not belong in the ED.


He has a son who he has not spoken to in 15 years.[1]

Season 7

You Can't Always Trust What You See

Dean is rebuked by Dr. Charles when he implies that Dr. Charles was the reason Dr. Choi got shot because he refused to put the patient on a psychiatric hold. Dean and Dr. Taylor treat a patient with an identical twin sister who insists they be treated exactly the same, including any medical procedures. When the case turns out to have a large psychological component, they hand the case off to Dr. Charles.



Season 6
When Did We Begin to Change Those Things Hidden in Plain Sight Do You Know the Way Home? In Search of Forgiveness, Not Permission When Your Heart Rules Your Head
Don't Want to Face This Now Better Is the Enemy of Good Fathers and Mothers, Daughters and Sons For the Want of a Nail So Many Things We've Kept Buried
Letting Go Only to Come Together Some Things Are Worth the Risk What a Tangled Web We Weave A Red Pill, a Blue Pill Stories, Secrets, Half-Truths and Lies
I Will Come to Save You
Season 7
You Can't Always Trust What You See To Lean In, or To Let Go Be the Change You Want to See Status Quo, aka the Mess We're In Change Is a Tough Pill to Swallow
When You're a Hammer, Everything's a Nail A Square Peg in a Round Hole Just as a Snake Sheds Its Skin Secret Santa Has a Gift For You No Good Deed Goes Unpunished... in Chicago
The Things We Thought We Left Behind What You Don't Know Can't Hurt You Reality Leaves a Lot to the Imagination