Susan Lewis

Fictional character Susan Lewis, M.D. is a character from the medical drama series ''ER'', portrayed by American actress Sherry Stringfield.

Susan appeared as a primary character in the pilot episode and left the show part way through in the third season. She later returned in the eighth season and remained as a member of the main cast until the start of the twelfth season. Finally, she returned to make a guest appearance in the series finale. Provided by Wikipedia