Mario is a graduate of Vermont Law School. Mario is admitted to practice law in the State and Federal Courts of New York and New Jersey. After his admission to the Bar, Mario began work as an Assistant District Attorney in the Richmond County District Attorney's Office under William Murphy. He worked there for 7 years rising to the position of chief of the Drug Crimes Unit. He left the DA's office to do medical malpractice defense litigation for the law firm of Amabile & Erman. Since 1999 Mario has been one of the premier criminal defense attorneys in New York City. Mario is a member of the Criminal Defenders Association, the Richmond County Bar Association and a past president of the Italian Club of Staten Island.