Trusted Divorce Lawyers Serving Long Island’s High-Net-Worth Clients
Regional Counsel with Deep Legal Roots
Representing Clients Throughout Long Island’s Divorce Courts
Gassman Baiamonte Gruner PC offers elite divorce representation to clients across Long Island. We focus exclusively on matrimonial and family law—especially for individuals with complex assets, business holdings, and high financial exposure.
From Nassau to Suffolk County, we provide strategic counsel on litigation, settlement, custody, and post-judgment matters, always with a personalized, discreet approach tailored to each client’s goals.
Why Long Island Clients Work with Our Team
Proven Experience in High-Stakes Divorce
Clients from across Long Island seek us out for our courtroom presence, financial fluency, and focus on outcomes. Our firm has been retained in cases involving closely held businesses, real estate portfolios, prenuptial agreements, and contested custody.
We serve professionals, executives, and business owners who require discreet, capable counsel when the stakes are high and the details matter.
Communities We Serve Across Long Island
Local Experience, Regional Credibility
We represent clients from across Nassau and Suffolk counties, including:
- Huntington
- Smithtown
- East Hampton
- Brookville
- Old Westbury
- Northport
- Montauk
- Southampton
- Cold Spring Harbor
- Bay Shore
While our office is based in Garden City, our reach extends across Long Island’s court system.