Mr. Potashnik also represents individual and business clients in all stages of federal, state, and local criminal investigations, grand jury proceedings, criminal prosecutions, administrative disciplinary matters, and forfeiture cases. He handles cases involving allegations of Medicaid fraud, Medicare Fraud, Insurance Fraud, No-Fault and Workers' Compensation Fraud, tax fraud and evasion, money laundering, bank fraud, mail and wire fraud, securities fraud, trademark counterfeiting, bribery, and illegal kickbacks.

The firm also handles a very limited number of selected civil litigation matters

Mr. Potashnik is admitted to practice law in New York and New Jersey state courts, United States District Courts for the Southern and Eastern Districts of New York, the United States Court for the District of New Jersey, Unitded States Court of Appeals for the Second Circuit, and the United States Tax Court.