Noah Barnes

Sheldon Wallace is a surgeon at St. Ambrose Hospital

Romantic life
Noah and Addison freuqently met in the scrub room over the period of the 3 months that Finishing took place, one of them always finishing surgery and scrubbing out and one scrubbing in, leading to their greeting of "Finishing or starting?".

They both continue to flirt, not knowing each other's names, and eventually meet in the doctor's lounge where Noah asks for her name. Looking shocked, he quickly leaves, and Addison later meets him as the husband of one of her pregnant patients, Morgan Gellman.

Upon this discovery, Addison quickly removed herself from Morgan's case, as she was not comfortable with her feelings for Noah while she treated his wife, feelings which Noah reciprocates. Addison, however, is not making a move in this relationship, refusing to be a home wrecker, after her past mistakes with her ex-husband and his best friend. Noah, however, asks her not to leave the case, as she is the best in her field and Morgan cannot loose another child (she had a string of miscarriages prior to seeing Addison), and he will keep his feelings for Addison in check.

Career
Noah is an attending cardiothoracic surgreon at St. Ambrose, who clashed with Cooper over allowing their 12 year old patient who wanted to die.