A job offer in 1977 brought Grossman, his wife and newborn daughter to Hollywood and MTM Enterprises, at the time among the busiest producers in television. In addition to Newhart — where he also directed three episodes — Grossman worked in production and postproduction on pilots and series including The Betty White Show, Mary and The Mary Tyler Moore Comedy Hour.
After leaving MTM in 1990, Grossman had jobs at Warner Bros., Paramount Television, Disney, Turner TV, Spelling Productions, NBC Productions, the Carsey-Werner Co., Steven Bochco Productions and CBS Productions.
He landed producing credits on other shows including Hope & Gloria, Public Morals, Conrad Bloom, Love & Money and Reno 911!
Grossman was also known for his roles at WB, Paramount, Casey-Werner as producer