In a lawsuit, Pippen charged Katten Muchin Zavis & Rosenman persuaded him to use controversial financial adviser Robert Lunn, who also was a client.
Pippen charged the law firm with negligence and conflict of interest, the Chicago Sun-Times said Thursday.
"He was completely faked out by his trusted legal advisers whose conflicts and incompetence have cost Scottie and his family millions of dollars," according the suit filed in Cook County Circuit Court.
Lunn faces a flurry of lawsuits by disgruntled former clients, seeking a total of $28.5 million. Many say money they invested with Lunn is unaccounted for or has disappeared. Lunn maintains he did nothing wrong.