Why NSI ?

  2 Convenient Locations
  Professional Staff
  Licensed by New York State
  Successful Track Record
  24 Hour Service
  Completely Confidential


 Put Us to Work for YOU!

Two Locations

 Long Island

114 Old Country Road
Suite #620
Mineola, NY 11501

320 Carleton Aveue
Suite #1000
Central Islip, NY 11722

Licensed by the NYS Department of State

At N.S.I. our staff  consists of experienced investigators who have had the training to bring our cases to successful conclusions.

For 24 Hour Service Please Call: