By Will Robinson
Updated October 06, 2015 at 12:00 PM EDT
Credit: Alexandra Wyman/WireImage

Larry Brezner, a veteran producer and manager, died Monday night at City of Hope Medical Group in Pasadena, California, after battling leukemia, his business partner confirmed to EW. He was 73 years old.

“Larry was truly like a brother to me. We spent 40 years together, having lunch together virtually everyday when we weren’t traveling,” Brezner’s management firm partner David Steinberg tells EW. “Larry was my best friend in every respect. In business, I spent more time with Larry than anybody else I know, including my wife.”

Brezner produced nearly 20 films over his career, including Good Morning, Vietnam, The Greatest Game Ever Played, and Ride Along. He managed a slate of high-profile clients: Robin Williams, Bette Midler, and Billy Crystal, in addition to Omar Benson Miller. He also worked closely with Oprah Winfrey and Martin Short. Another one of Brezner’s accomplishments is helping assemble Comic Relief, a fundraiser aimed at helping the homeless.

Steinberg says Brezner will be remembered for his spirit and his humor.

“He was the funniest person I’ve ever known,” Steinberg said. “He was an incredible talent, spirit. Larry played guitar. He salsa danced. He was a fantastically funny human being — like a standup comic.”

Brezner is survived by his wife, Dominque Cohen-Brezner, his two daughters, Lauren Azbill and China Brezner, and his brother, Jeff. Donations can be made to in Brezner’s name to City of Hope here.