A premier matrimonial and family law firm dedicated exclusively to guiding families through critical legal transitions. Based in Garden City, NY — serving Nassau County, Suffolk County, Westchester, and New York City.
Aiello & DiFalco LLP was founded by Mary Ann Aiello, one of the most respected matrimonial attorneys on Long Island, with a singular vision: to provide every client with the focused, skilled, and compassionate legal representation they deserve during the most challenging moments of their lives.
The firm has grown to include Partner Michael DiFalco and Associate Attorney Leah Zweig — a close-knit team of three dedicated attorneys who share Mary Ann's foundational belief that family law demands not just legal expertise, but genuine human understanding.
What distinguishes Aiello & DiFalco LLP from larger, multi-practice firms is our exclusive dedication to matrimonial and family law. We do not handle real estate closings, estate planning, criminal matters, or commercial litigation. Every attorney at this firm, every hour billed, and every strategy developed is focused entirely on the area of law that affects families — divorce, custody, support, and the full spectrum of related matters. That focus translates directly into depth of knowledge and quality of representation.
We've dedicated our practice to guiding families through critical transitions. From divorce and child custody disputes to prenuptial agreements and more, we understand that the well-being of your family and your children is the ultimate priority. That understanding shapes everything we do.
Mary Ann Aiello has spent over four decades dedicated exclusively to New York matrimonial law.
We handle only matrimonial and family law matters — no distractions, no divided attention.
A close-knit team that offers personalized attention. You will always know who is handling your case.
Every family is different. Every case demands a customized strategy. Here is how we approach the work we do.
Many family law matters — including divorce — can be resolved through skilled negotiation without ever entering a courtroom. We pursue this path when it serves our clients' goals, negotiating from a position of full preparation and legal strength. Negotiated outcomes are often faster, less costly, and more durable because both parties have a hand in shaping them.
Mary Ann Aiello is a certified mediator with decades of experience facilitating constructive dialogue between parties in dispute. Mediation offers a private, non-adversarial path to resolution — one that is particularly beneficial for families with children, as it models cooperative problem-solving and reduces the emotional toll of prolonged conflict. Where appropriate, we encourage mediation as a first step.
When negotiation and mediation fail — or when the stakes demand full courtroom advocacy — we are ready. Mary Ann Aiello and Michael DiFalco bring combined decades of trial experience in New York family and supreme courts. We prepare every case as if it will be tried, which strengthens our negotiating position and ensures that if a matter does go to court, we are fully prepared to win.
Our attorneys have earned recognition from leading legal rating organizations and professional associations throughout their careers.
Mary Ann Aiello named to the Super Lawyers list for 10 consecutive years — a distinction earned by fewer than 5% of attorneys in New York.
Michael DiFalco holds a perfect 10/10 AVVO rating with the Top Attorney designation and numerous 5-star client reviews.
Michael DiFalco recognized as a Super Lawyers Rising Star — awarded to attorneys under 40 who exhibit excellence in their practice.
Members of the Nassau County Bar Association, maintaining active participation in the local legal community.
Mary Ann Aiello is a member of the American Inns of Court, dedicated to professionalism and excellence in the legal profession.
Members of the New York State Bar Association, staying current with changes in New York family law and professional standards.
Regularly referred clients by other attorneys and judges — a mark of professional respect earned through decades of results.
Leah Zweig brings experience as a former case manager at Sanctuary for Families, New York's leading domestic violence organization.
Our office is located at 600 Old Country Road, Suite 205, Garden City, NY 11530 — in the heart of Nassau County, easily accessible from communities throughout Long Island and the greater New York metropolitan area.
From our Garden City office, we serve clients in Nassau County, Suffolk County, Westchester County, and all five boroughs of New York City. Our attorneys appear regularly in courts across each of these jurisdictions.