Mark Greene

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Dr. Mark Greene
Anthony Edwards as Mark Greene
First appearance	September 19, 1994 (1x01, "24 Hours")
Last appearance	November 13, 2008 (15x07, "Heal Thyself")
Portrayed by	Anthony Edwards
Duration	1994–2002, 2008
In-universe information
Title	Chief resident (1994–1995) Attending physician (1995–2002)
Occupation	Emergency physician
Family	David Greene (father, deceased) Ruth Greene (mother, deceased)
Spouse	Jennifer "Jen" Greene-Simon (divorced) Elizabeth Corday (widowed)
Children	Rachel Greene (daughter with Jennifer, born on February 16, 1987) Ella Greene (daughter with Elizabeth, born on April 28, 2001)

Mark Greene, M.D. is a fictional character from the American medical drama series ER. Portrayed by actor Anthony Edwards, he first appeared in the series' pilot episode, as well as subsequently appearing as one of the principal characters until the end of the eighth season. Edwards later returned to make a guest appearance in the fifteenth season episode "Heal Thyself".

Considered to be the lead protagonist of the series’ first eight seasons, Greene's role was that of a mediator and occasional authority figure. He begins the series as the ER's chief resident, before being promoted to an attending physician. He became the only member of the original set of main characters who died during the series.