Mark is a television writer and producer who lives in Los Angeles. He’s worked in both the sitcom and drama worlds for 25 years. Sitcom credits include Ellen, Dave’s World, Jesse, Caroline In The City, The Naked Truth, The Tony Danza Show and Working. Mark worked on Ellen in its first year, back in 1993, when the show was still called These Friends Of Mine. He returned two years later to help write and produce the fourth season of the show, which culminated in “The Puppy Episode” -- when Ellen DeGeneres’s character famously came out as gay. The episode won an Emmy for best comedy writing.

Drama credits include Jake 2.0, Charmed, Grey’s Anatomy, Private Practice, Scandal, Still Star-Crossed and Good Girls.

Mark served as Co-Executive Producer and Executive Producer on Grey’s Anatomy for seven years, from 2005 until 2011. During that time, he wrote a dozen episodes of the show and was part of a writing staff that was nominated twice for an Emmy for best dramatic writing. His episode, “Where The Boys Are”, won the GLAAD Media Award for Outstanding Individual Episode. Another episode, “Life During Wartime”, won the 2008 Genesis award for dramatic writing.

In 2011, Mark moved to Scandal, serving as Executive Producer and head writer for five years. One of his episodes, “Nobody Likes Babies”, was cited by Time magazine as one of the Top Ten TV episodes of 2013. Scandal was also honored by the AFI in 2013 for “its contribution to America’s cultural legacy.” In the fall of 2016, Mark moved to New York for six months, where he executive produced a summer series for ABC, entitled Still Star-Crossed.

In 2005, The Cell, a comedy pilot he co-wrote, was hailed by the New York Times as the “funniest unproduced script in Hollywood.” Mark is currently a writer and executive producer on the NBC show Good Girls.

Mark attended the University of Massachusetts in Amherst from 1975-1979, where he received a Bachelor’s degree in Economics.