40 years of investigation work. One of the most respected private detectives in New York. The founder and lead investigator of New York Intelligence Agency.
David Schassler founded New York Intelligence Agency in 1989 and has personally directed every significant case the agency has handled since. He's the rare private investigator whose work has been recognized with an Emmy Award, and his client list spans Wall Street firms, top tier defense and matrimonial attorneys, public figures, and the families behind some of New York's most discreet investigations.
David's career began in investigative journalism, where the Emmy winning work was done. Long form investigative pieces that needed the same discipline as private investigation: source development, document discipline, surveillance technique, and the patience to keep working a case long after the easy answers ran out.
That foundation. Investigative reporting at the level that wins network broadcasting's highest honor. Translated directly into the kind of private investigation practice David built. Cases at NYIA are run with the rigor of a major journalism investigation: documented, sourced, and built to hold up under any kind of scrutiny.
Over 40 years, David has built deep skill across a specific set of investigation disciplines: TSCM debugging and counter surveillance, complex matrimonial work, corporate fraud and embezzlement investigations, missing persons cases (domestic and international), and the financial fraud investigations that combine traditional investigation with forensic accounting and asset tracing.
David is an Emmy® Award recipient. He served as Lead Researcher on the New York Emmy. Winning investigative report “Red Light Rabbi” (Hard News: Single Story), broadcast on WCBS TV on November 29, 2006. Alongside Chief Investigative Reporter Scott Weinberger, Executive Producer Carl Gottlieb, and Editor Pat Quinn. View the New York Emmy® record →
He has also been featured by the New York Post, CNBC, and Legal Leaders Magazine, and is a member of the National Academy. NYS DOS License #11000169770. Licensed, bonded, and insured.
Most New York PI agencies operate on a volume model. Junior investigators handle the actual fieldwork, the principal signs the contracts and the reports. That's not how NYIA works. David personally vets every case before it's accepted, personally directs the investigative strategy, and personally signs every final report. Clients have David's direct line.
That model limits how many cases the agency can handle at once. It's also the reason clients keep coming back, and why our reputation in New York investigation circles has held up for three and a half decades.



