She first came to prominence as a guest star on the television drama ER, portraying the recurring role of Dr. Maggie Doyle from 1996 to 1999. This was followed by another critical success in the recurring role of Secret Service Agent Gina Toscano on The West Wing in 2000. After appearing in several minor films and TV series, including a 1993 episode of Law & Order, Fox entered the limelight in 1996 when she joined the hit NBC television series ER, as the no-nonsense vegetarian and lesbian medical intern Dr. Maggie Doyle. in September 2007, after rumors emerged about Fox’s departure from the show, an online forum called “Your Tax Dollars At Work”, started a campaign to keep Sara Sidle on CSI; the campaign (called Dollars for Sense) includes mailing the show’s producers a dollar so as to keep Fox on the show. With the help of donations, the campaign also organized plane flyovers over the Universal Studios lot in California where CSI is filmed. The banners read “Keep Jorja Fox on CBS”. 24, 2009) and four additional episodes.
