The Austin American-Statesman reported Wednesday that Dr. Charles Fischer has filed an official grievance over his Nov. 14 dismissal.
Fischer has also notified the Texas Medical Board that he intends to fight for the return of his medical license. The agency on Nov. 22 suspended Fischer's physician privileges, citing nine instances, going back to the 1990s, in which the psychiatrist allegedly had abused young patients.
Fischer has not been charged with a crime and he's denies the allegations.
Fischer lawyer Antonio Cobos told the newspaper that credibility questions have been raised about some alleged victims.
A spokeswoman says the Texas Department of State Health Services stands by its decision to fire Fischer.
