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Dr. Noah Sexton is a former medical student and resident in Emergency Medicine at Gaffney Chicago Medical Center. He is the younger brother of April Sexton. He was portrayed by Roland Buck III.


Noah is the youngest child and only son of Brazilian immigrants. He and his sister were raised Catholic. His parents always insisted he should be a doctor, and so he struggled through medical school with the help of his talented sister, who sacrificed her own career for him.

Noah was fired in the Season 6 episode When Your Heart Rules Your Head

Season One


Noah freezes while assisting Dr. Choi with a patient with a gunshot wound. He thinks Dr. Choi doesn't like him after that, so he takes credit for Sarah Reese's work to impress him. She won't tell on him if he makes it right. At the end of the episode April cancels her dinner plans with firefighter Kelly Severide in order to help Noah study for his exams.

Season Five

We're Lost in the Dark

Noah meets Crockett Marcel, who is giving himself IV fluids as a "pick-me-up" in an ED treatment room. He and Crockett treat a patient who was extracted from a crashed ambulance. They diagnose him with arterial stenosis, but disagree on the course of treatment. Crockett convinces the patient to have bypass surgery. When the power goes out during the surgery, Noah is called into the OR to assist. Crockett proposes to perform the surgery "off-pump" as the patient is not able to be put on bypass again, despite Noah's objections that it is too risky. Just as they successfully complete the procedure, the power returns. When Noah wants to apologize for some missteps during the procedure, Crockett instead compliments him on his skills, peaking Noah's interest in becoming a surgeon.

Got a Friend in Me

Inspired by Crockett's encouragement, Noah has started his residency in general surgery. Ethan gets annoyed with him and Crockett when they try to poach one of his patients. When the patient pulls through, he is surprised that Ethan isn't more happy.


  • He speaks Brazilian Portuguese fluently and he can also speak Spanish, possibly fluently.


Season 1
Derailed iNo Fallback Mistaken Malignant
Bound Saints Reunion Choices Clarity
Intervention Guilty Us Hearts Inheritance
Disorder Withdrawal Timing
Season 2
Soul Care Win Loss Natural History Brother's Keeper Extreme Measures
Alternative Medicine Inherent Bias Free Will Uncharted Territory Heart Matters
Graveyard Shift Mirror Mirror Theseus' Ship Cold Front Lose Yourself
Prisoner's Dilemma Monday Mourning Lesson Learned Ctrl Alt Generation Gap
Deliver Us White Butterflies Love Hurts
Season 3
Speak Your Truth Nothing to Fear Trust Your Gut Naughty or Nice Mountains and Molehills
Ties That Bind Over Troubled Water Lemons and Lemonade On Shaky Ground Down By Law
Folie à Deux Born This Way Best Laid Plans Lock It Down Devil in Disguise
An Inconvenient Truth The Parent Trap This Is Now Crisis of Confidence The Tipping Point
Season 4
Be My Better Half when to Let Go Heavy Is the Head Backed Against the Wall What You Don't Know
Lesser of Two Evils The Poison Inside Us Play by My Rules Death Do Us Part All the Lonely People
Who Can You Trust The Things We Do Ghosts in the Attic Can't Unring That Bell We Hold These Truths
Old Flames, New Sparks The Space Between Us Tell Me the Truth Never Let You Go More Harm Than Good
Forever Hold Your Peace With a Brave Heart
Season 5
Never Going Back to Normal We're Lost in the Dark In the Valley of the Shadows Infection, Part II Got a Friend in Me
It's All in the Family Who Knows What Tomorrow Brings Too Close to the Sun I Can’t Imagine the Future Guess It Doesn't Matter Anymore
The Ground Shifts Beneath Us Leave the Choice to Solomon Pain Is for the Living It May Not Be Forever I Will Do No Harm
Who Should Be the Judge The Ghosts of the Past In the Name of Love Just a River in Egypt A Needle in the Heart
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