The indictment from the Manhattan Attorney's Office names 34 defendants who are alleged to be members or associates of two connected organisations that have been the subject of a complex undercover investigation by the FBI's organised crime unit.
Mr Nahmad, 34, pleaded not guilty when he appeared in court last month. A trial date has been set for June 2014.
None of these charges relate to Mr Nahmad's cousin (also named Hillel) who runs the Helly Nahmad Gallery in London's Cork Street.
