Speaking at the TCA summer press tour, Sorkin branded the claims as "unsourced and untrue".
Sorkin said: "I want to be as clear as I possibly can about this. The writing staff has not been fired... Just seeing that in print is scaring the hell out of the writing staff… I want the old gang back. It is a fantastic group of men and women to come to work with."
He also denied reports that one of the writers returning for the HBO drama's second season would be an ex-girlfriend of his, saying: "I do not have an ex-girlfriend on the writing staff or writing room or anywhere else on the cast."
However, the Oscar and Emmy Award-winning screenwriter did acknowledge that there have been a couple of promotions on The Newsroom's creative team and revealed that he plans to work with paid consultants from print, online and broadcast media for the show's second season.
Sorkin also answered criticism of The Newsroom during the panel, acknowledging that "there were critics who did not enjoy watching the first four episodes" and arguing that he does not write 'weaker' female characters.
"The men and the women screw up in roughly the same way," he said. "These very smart people do screw up in roughly the same way."
Sorkin did however suggest that he welcomes the debate around the show, adding: "Anytime people are talking this much about a television show, it's good for television."
Watch a behind-the-scenes featurette for episode 4 of The Newsroom below: