He has been in the business for over 15 years and his experience and expertise with discrete investigations is unparalleled. If you check out some of his reviews, you will see that he has the experience and skill which you need when seeking a detective or private investigator. David Schassler is known to be not only top notch, but his company, New York Intelligence Agency, is the finest investigation agency nationwide. Let New York Private Detective David Schassler, assist you in private investigations in New York, the surrounding areas, nationwide, or worldwide.

David Schassler Commendations:

  • Distinguished Service Award (Three)
  • Excellent Police Duty (Six)
  • Meritorious Police Duty (Six)
  • Certificate of Merit (Five)
  • Citations (Three)

David Schassler Memberships and Affiliations

  • Nine Lives Association
  • Rockland County Shields (New York)
  • Rockland County PBA (New York)
  • American Society for Industrial Security
  • National Association of Fraud Investigators
  • Investigators of America
  • International Association of Bomb Technicians and Investigators

Licensed, Bonded, Insured.

New York Intelligence Agency, Inc.|About

Voted best Private Investigator NYC, David Schassler is the owner of one of the most prominent and successful private investigation companies in the United States.


Hire an experienced Private Detective in NYC from the New York intelligence Agency. David Schassler is said to be not only a top private detective, but also the owner of the finest New York City Investigation Company. If you are looking for a Private Investigator in New York City, you have come to the right place. But don’t worry if you’re not in New York, we more than likely can still handle your Investigation. Our commitment to the citizens of New York is unparalleled in the investigative industry.

A Private Investigator in NYC can help you catch a cheating spouse, perform background checks for your company, perform asset checks, deal with Child custody issues or any type of matrimonial investigations. NewYorkInvestigations.com are the New York City Private Detective Agency you have been seeking. Your concerns and investigative needs will be taken care of throughout the investigating process by our highly trained and dedicated staff. New York background checks and criminal searches are also services that we can provide highly up to date and confidential information for.

We specialize in every aspect of investigations so we are your one-stop New York intelligence agency. So whether it is surveillance, voice stress analysis, lie detector test, corporate surveillance, corporate security, skip trace, domestic investigation, executive protection, explosive/narcotic detection, or even a hidden camera, we will handle the investigation for you as a top Private Investigator in NYC.


New York Intelligence Agency, Inc.|About
J Avanti
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Although I never expected to require the services of a private investigator, I found myself in just such a situation. David Schassler of New York Intelligence came through for me! He quickly, discretely, and efficiently collected the evidence I needed to support my divorce case. I can’t recommend David highly enough!
New York Intelligence Agency, Inc.|About
C Keating
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I initially hired New York Intelligence to conduct background searches for my business when I was starting a new division. He finished all 12 reviews right on schedule! And then my Cousin Bucky went missing…well, David Schassler left his own birthday party to start tracking Bucky and he found him before my Aunt Louise even had time to worry! My family and I can’t say enough good things about Mr. Schassler and his firm. Hire them – you won’t be disappointed!
New York Intelligence Agency, Inc.|About
B Hogan
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I have had many instances where my family has used David services and there has always been a positive outcome! Thanks Again Barbara
New York Intelligence Agency, Inc.|About
L James
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David Schassler’s firm solved my complex situation, by conducting hard to get interviews, which subsequently solved the case. I would recommend David to anyone who needs to get a tough job done.


Matrimonial Investigations & Voice Stress Analysis – Truth or Lie Detection along with Executive Protection.

New York Intelligence Agency, Inc.|About
New York Intelligence Agency, Inc.|About
New York Intelligence Agency, Inc.|About
New York Intelligence Agency, Inc.|About
New York Intelligence Agency, Inc.|About