David Lieser

Robert Sullivan, the firm’s senior member, is one of America’s top trial lawyers and an advocate with an unparalleled reputation for defending the public interest and championing equal justice under the law. For more than 40 years, he has been trying cases that have had a substantial impact not only for clients but also on the law itself. He has been an instrumental figure in developing and expanding the law of negligence. His skill was evident from the beginning. Mr. Sullivan joi...

Tara Eyer Daub is a litigation attorney in Nixon Peabody’s Labor & Employment group. She represents employers in trial and appellate court litigation; governmental investigations; labor relations negotiations, disputes and union representation proceedings; and providing strategic and compliance counseling relating to employment decisions and policies, for union and non-union employers. What do you focus on? I have extensive experience representing hospitals and other health care ind...

Andrea Berkowitz is a lawyer recognized by Best Lawyers in the practice area of Family Law. Andrea practices law in Garden City, New York Best Lawyers has recognized Andrea Berkowitz since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Andrea Berkowitz is held by other lawyers.

Aaron E. Zerykier is a commercial litigation attorney with more than 20 years of experience representing businesses and professionals in complex disputes. Based in Uniondale, New York, he practices with Rivkin Radler LLP and represents clients in federal and state courts throughout New York. Aaron’s work includes matters involving construction disputes, business dissolutions, shareholder and partnership disputes, real estate conflicts, and business tort claims. A significant portion of ...

Michael Calcagni is a lawyer recognized by Best Lawyers in the practice areas of Litigation - Trusts and Estates and Trusts and Estates. Michael practices law in Garden City, New York Best Lawyers has recognized Michael Calcagni since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Michael Calcagni is held by other lawyers.

Lawrence Eric Davidow is a top attorney recognized by Best Lawyers in the practice area(s) of Elder Law and Trusts and Estates who practices law in Islandia, New York, and has been recognized since 2007. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lawrence Eric Davidow is held by other top lawyers in the same geographic and legal practice area. Mr. Davidow is the senior and managing partner of Davidow, Davidow, Siegel & Stern, redirec...

Walter J. Gumersell advises businesses, entrepreneurs, and organizational leaders on a broad range of corporate, legal, and financial matters. Based in Uniondale, New York, he is a partner at Rivkin Radler LLP and works with clients at various stages of growth, from formation through complex transactions and ongoing operations. As a partner in Rivkin Radler’s Banking , Corporate , Tax , and Trusts & Estates Practice Groups, Walter represents clients in merger and acquisition transac...

Dina De Giorgio has more than 30 years of experience handling divorces and other family law matters. Prior to joining Abrams Fensterman, LLP, she operated her own boutique law practice focused on representing clients in Nassau and Suffolk Counties. Dina is a tenacious advocate and pragmatic problem solver for her clients, both inside and outside the courtroom. Clients choose her because she is solution-oriented, remains focused on their objectives, and seeks to avoid protracted and unnecessar...

Adam D. Cahn is a litigator with decades of experience representing individuals and families in personal injury litigation and Legal malpractice matters throughout New York, New Jersey, and Connecticut. Since beginning his legal career in 1994, he has handled complex cases in both state and federal courts, advocating for clients in matters involving catastrophic injuries , negligence claims, and wrongful conduct. Mr. Cahn’s practice includes Personal Injury Litigation - Plaintiffs, with...

Louis Vlahos is an attorney at Rivkin Radler LLP in Uniondale, New York whose practice focuses on Tax Law , Business Organizations (including LLCs and Partnerships), Litigation and Controversy - Tax , and Trusts and Estates . He advises businesses, individuals, and tax-exempt organizations on a wide range of federal and state tax matters, including corporate, individual, and partnership income taxation, as well as estate and gift taxation. His work includes tax planning, ruling requests, and ...