Private Investigation Services
Licensed, discreet investigative support for individuals, law firms, insurance professionals, employers, and businesses across Long Island and New York.
Licensed & Bonded · 35+ Years of Experience · Confidential · Responsive
Investigation Services Built Around the Matter
Choose a service below or contact GSI directly. We’ll help determine the appropriate investigative approach based on your objective, timing, and available information.
Background Checks
Background checks for individuals, employers, landlords, and organizations.
Business Screening Accounts
Recurring employee, vendor, contractor, and tenant screening for organizations.
Workers’ Compensation Surveillance
Objective surveillance and documentation for insurers, employers, and claims professionals.
Insurance Investigations
Investigative support for carriers and claims teams handling complex or disputed matters.
Trial & Litigation Support
Research, locating, surveillance, and investigative support for attorneys and legal teams.
Surveillance Services
Discreet field surveillance for claims, legal matters, businesses, and private assignments.
ONE TEAM. MANY INVESTIGATIVE NEEDS.
Focused Support From the First Question to the Final Report
Every matter starts with a different objective. GSI helps define the investigative approach, identify useful sources of information, and deliver clear findings for individuals, attorneys, insurers, employers, and businesses.
Confidential
Responsive
Experienced
Locate Investigations
Research and investigative work to help locate witnesses, parties, beneficiaries, and others.
Health Care Fraud
Investigative support for healthcare-related claims, billing concerns, and suspected fraud.
Property & Casualty Claims
Field investigation, research, surveillance, and documentation for P&C matters.
Life & Health Claims
Focused investigative support for life and health insurance claim matters.
Asset Protection & Loss Prevention
Discreet support for theft, inventory loss, internal issues, and business concerns.
RESEARCH + FIELDWORK
Investigative Support That Goes Beyond the Desk
Depending on the matter, GSI can combine records research with surveillance, locating, field investigation, interviews, and documentation to develop useful information and a clearer picture of the facts.
Long Island
New York
National Background Checks
Not Sure Which Service You Need?
Tell us what is happening and what information you need. We’ll review the matter and help identify the right next step.