Mark has been USG's Director of Music since 1983. He has built the choir into an outstanding ensemble that sings at most Sunday services during the year and presents two major chorale programs annually.

Mark also teaches music at Chestnut Hill Academy and is the Music Director at Old York Road Temple Beth Am where he was honored in 2002 for eighteen "chai" years of service. For twenty-one years, he has been the Artistic Director of the Ambler Chorale Society, a community chorus in Montgomery County. He also serves as the concert accompanist for the Orpheus Club of Philadelphia, the oldest men's singing society in the US.

Mark earned his Master of Music in Chorale Conducting at Temple University's Esther Boyer College of Music. While at Temple, he received the Elaine Brown Tribute Award as well as membership in Pi Kappa Lambda. He has participated in master classes at the Oregon Bach Festival with Helmuth Rilling, a Chorus America summer conducting workshop, and the annual Robert Shaw Chorale Workshops at Carnegie Hall. An honors graduate of the Eastman School of Music, Mark has also taken courses at Westminster Choir College and the School of Sacred Music at Hebrew Union College. He is listed in the 2006 editions of Who's Who in America and Who's Who in American Education.