Mark Remillard began working in news as an intern at Los Angeles news/talk radio station KFI AM640. There he worked for the station's long-time morning host, Bill Handel. He also shadowed KFI reporter Steve Gregory and assisted with his coverage of the preliminary hearing of two police officers charged with murder.
In August 2012, Mark moved to Phoenix to attend Arizona State University to complete his bachelor's degree in Print Journalism and Mass Communications and was hired as a part-time reporter/anchor for KTAR News. While studying at ASU he anchored weekend newscasts and worked as a fill-in
reporter at KTAR. He also worked as a crime reporter for ASU's student publication, The State Press. In his final semester at ASU, he was promoted to a full-time reporter for KTAR.
After graduating Mark stayed on at KTAR, and in the nearly three years he worked there he covered a range of assignments including local and state government, transportation, crime and breaking news, as well as President Barack Obama's visit to Phoenix in January 2015.
In August 2015, Mark moved to New York City to join ABC News as a radio correspondent. Since then he has played an important role in ABC News Radio's coverage of news events including Election Night 2016, the Orlando Pulse Nightclub Shooting, and the spread of Zika virus in the U.S. He also played a key role covering the 2016 presidential election, primarily covering the Trump, Clinton, and Rubio campaigns, as well as various primary contests spanning the East Coast.
Mark also worked alongside author and Forbes contributor Micheline Maynard as an intern for her 2014 book Curbing Cars: America's Independence from the Auto Industry and later co-hosted and produced a podcast with Maynard entitled How to Cover Money.