Long Island Investigators

Investigating for over 30 years!

Private Investigator Suffolk County

Long Island Investigations, Inc.


Consultations are free. We are there to answer all your questions in your time of need.

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For an overview of some of the services we offer

About Us - History


Visit our History page to learn more about our qualifications and experience

Suffolk County, Long Island Private Investigators


We conduct investigations throughout Nassau, Suffolk and New York City. We specialize in the Long Island area.

516-458-1999 Experience, Diligence, Results!

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suffolk county private investigators

Suffolk County Private Investigator 516-458-1999

We are a full-service Private Investigator based in Suffolk County and Nassau County, Long Island, NY. Our services are available throughout New York State.

Long Island Investigations, Inc., Private Investigators

With all the Private Investigators out there the days, what sets us apart from all the rest? Read below to find a few of the many reasons why we are the leaders. See why we have set the standard for investigations in this modern age.

Experience Is Our Strength! Always Confidential

Never placed on hold, never sub-contracted, full access to the owner and Senior Investigator, Paul Massimillo, 24/7, our investigators are former NYPD Detectives. Call 516-458-1999. Massapequa and Suffolk Offices.

Main Menu:

Services Include..

suffolk county private investigator

General Surveillance

Matrimonial Cases


Worker's Comp Fraud

Cheating Spouse or Partner

Insurance Fraud

Child Custody Cases

Child Care Investigations

And much more...

Private Investigator

private investigator suffolk county

Long Island Investigations, Inc. is a Private Investigator Agency located on Long Island and serving all of Suffolk County and Nassau County


We offer several forms of payment for our services. Ask about credit and financing.

Why choose us? What sets us apart from the others? Call 516-458-1999

There are so many choices, when it comes to private investigators. So why us? For many reasons that some other agency's won't tell you. Nowadays, it's a simple task to put up a web site and begin offering investigation services. But what about the investigators themselves? What about experience? Who are their investigators? How do they operate? What evidence is obtained and how? We can answer all of your questions and address all your concerns with a free consultation, any time. Call 516-458-1999.

We offer personal service. When you hire Long Island Investigations, your investigator is available to you via telephone, text or email, anytime day or night. 24/7 access to the individual who is conducting your investigation and also to Paul, the President, owner and Senior Investigator. Further, we report events as they occur, not hours later. You are always informed and updated on every aspect of your case.

We offer personal, one-on-one service to all clients. You always speak with a live person, not an automated web site. We accept investigations, large or small. Geographically, we specialize in Suffolk County and in Nassau County.

We train and instruct other private investigators on our proven methods, through seminars. We offer unmatched investigative experience and ability with tens-of-thousands of hours conducting surveillance. Remember, your initial consultation is always free! This includes all inquiries including infidelity or cheating spouse, matrimonial, divorce, child custody, worker's compensation

We do not sub-contract our cases. Never..ever. Our clients can be sure that only our own private investigators conduct the investigation you hired us for. Every case is conducted by our staff of former New York City Police Department Detectives.

Our clients consist of the general public, attorneys, large and small corporations, nationally known insurance companies for insurance fraud investigations and more. Every client is treated equally, regardless of the scope of the case. We perform all investigations diligently, accurately, confidentially and discreetly.

Long Island Investigations is trusted and retained by the insurance industry's largest national firms to perform fraud cases and worker's compensation fraud investigations. LI Investigators is a private investigator agency, serving Long Island, Suffolk County and Nassau County. What experience can Long Island Private Investigators offer you? Click here to find out.





Visit our About Us page to learn of our experience

Visit our Services page to see some of the services offered

Licensed Bonded Insured

Licensed by the New York State Department of State, Division of Licensing Services

Licensed 2005-2012 Long Island Investigations, Inc. All Rights Reserved