about us
Trusted Divorce and Family Law Counsel Backed by
Decades of Litigation Experience
Our Attorneys Are Leaders in the Legal Community
Reputation Matters—in Court and Beyond
Stephen Gassman’s reputation as one of Nassau County’s premier trial attorneys is more than professional recognition—it’s a strategic advantage. When opposing attorneys know our litigation history, they approach settlement differently.
Rosalia Baiamonte and other members of our team are active leaders in the Nassau County and New York State Bar Associations. This visibility means our attorneys help shape the legal field in which they operate, offering clients insights grounded in legal influence as well as case law.
Partner
Partner
Partner
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Associate
A Firm Built for High-Stakes Matrimonial Litigation
Focused on Family Law
Gassman Baiamonte Gruner, PC was founded with a clear mission: to provide unmatched legal representation in complex matrimonial and family law cases. With over 50 years of experience, Stephen Gassman has led the firm in building a practice that serves high-net-worth individuals and business owners navigating contentious or high-stakes divorce.
Clients don’t come to us for routine cases. They come for clarity, focus, and legal talent capable of managing litigation involving multimillion-dollar estates, business valuations, and contested custody issues with discretion and authority.
Deep Roots in Nassau County, Strategic Reach Across Metro NY
Local Knowledge with Statewide Perspective
Our office in Garden City places us in close proximity to the Nassau County Supreme and Family Courts, where we handle many of our cases. We also routinely represent clients across the broader New York metro area, including Manhattan, Queens, and Westchester, bringing regional understanding and procedural experience to every matter.
This combination of proximity, authority, and strategic reach makes Gassman Baiamonte Gruner, PC a trusted choice for clients whose legal matters require seasoned counsel and precise execution.
Our Approach: Prepared, Practical, Proven
Focused on Strategy, Not Theater
We don’t believe in posturing or courtroom theatrics. Our approach is analytical, thorough, and goal-oriented. Whether negotiating a settlement or preparing for trial, we provide a clear strategy tailored to the facts, risks, and priorities of each client’s case.
This preparation isn’t just a mindset—it’s a method. It’s why our firm is consistently trusted by those who cannot afford legal missteps.