This article is from the ER FAQ, by Rose Cooper firstname.lastname@example.org with numerous contributions by others.
In "A Miracle Happens Here" , Mark Greene describes
himself as "the son of an agnostic Jew and a lapsed Catholic",
although he doesn`t identify which side of his family is Jewish. His
part of that episode`s story involves him rediscovering an aspect of
his faith, and at the end of the show, he helps a Jewish family
Dr. Morgenstern identified himself once as half-Jewish, half-
"genuine Highland Scots". In that episode ("True Lies", ),
Morgenstern celebrates Robert Burns` birthday, a Scottish tradition.