He is a frequent guest with the Boston Chamber Music Society and has collaborated with the Borromeo, Ying, Lydian and Parker String Quartets. Thomas was a founding member of A Far Cry and is a current member of East Coast Chamber Orchestra (ECCO) that tours under Frank Salomon Management. A former member of the New World Symphony, he has played with the San Francisco Symphony, Detroit Symphony Orchestra, and the San Diego Symphonies.

In addition to enjoying a diverse performing career, he is on the faculty of the New England Conservatory and has been faculty at the Longy School of Music and Boston Conservatory, as well as guest teaching and master classes at the New England Conservatory, San Francisco Conservatory, Boston University, and the Hartt School of Music.