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Lions Club International

Lion’s Club International is a long-standing organization that works with local communities and charities in providing service and support. Matthew has been a member since 2002 and was honored with the prestigious Outstanding Leadership and Achievement Award from the Lions Club International President. Matthew Seifer’s project work included operating as 2nd VP of Canine Companions for Independence for the Northeast region.


The CHAIN (Charity, Humility, Autonomy, Integrity, Networking) is a professional networking association that focuses on connecting with other professionals through service and charity. Matthew Seifer and Radius Investigations has worked with The CHAIN to raise money and participate with Habitat for Humanity and Bikes for Kids

Long Island Professionals On Demand

LIPOD is a network directory of professionals with expertise in their industry located on Long Island. Matthew Seifer and Radius Investigations are listed in their directory as the key experts in private investigation.

Island Business Affiliates

Radius Investigations is a member of Island Business Affiliates (IBA) as the private investigator expert in their network. IBA is a local professional network providing trusted resources for the community’s needs.

Michael Magro Foundation

Michael Magro Foundation, established in honor of Michael Magro, who lost his life to leukemia, provides awareness, advocacy, and support for families of children with cancer. Seifer participates and sponsors their annual “Evening of Tasting and Giving” event and is a member of 333 STRONG.

Long Island Networking Executives (LINE)

Long Island Networking Executives’ mission is to provide business relationships with other businesses and share knowledge from each member’s respective field. Matthew D. Seifer is the trusted representative for private investigation and security.

For more information about Radius Investigations, please feel free to contact Matthew at m.seifer@RadiusInvestigations.com, or you can contact Matthew directly at 1 (631) 351-6473

Ready to find out more?

For more information about Radius Investigations,
contact an investigative professional at info@nyinv.com,
or call us directly at 1 (631) 351-6473 or toll-free at 888-698-0077.

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