Dana J. Finkelstein graduated from Ithaca College in 1987 after receiving her B.A. in Political Science with a minor in Sociology. She then went on to study law at Ohio Northern University Claude W. Pettit College of Law, receiving her Juris Doctor in 1990. Ms. Finkelstein is admitted to practice in New York as of January 9, 1991, and Connecticut as of December 7, 1990.

Ms. Finkelstein is a member of the Nassau County Bar Association and its matrimonial and family law committees, as well as an active member of the Nassau County Family Law Inns of Court, an advisory board member of the WE CARE FUND (the charitable arm of the Nassau County Bar Association), acting as the recording secretary for two years during her last decade of service. In addition, Ms. Finkelstein is a former member of the Nassau County Judicial Screening Committee. Ms. Finkelstein is also a Matrimonial Special Master with the Nassau County Mediation program, appointed by the supervising matrimonial judge. She has also co-authored an article published in the Nassau County Lawyers and has been recognized by Lawyers of Distinction for 2019, 2020, 2021, and 2022.

Ms. Finkelstein practices in Nassau, Suffolk, Queens, New York, Kings, Richmond, Bronx, and Westchester counties. During her 30+ years of practice, she has concentrated in matrimonial and family law, dealing with both uncontested and high conflict cases, engaging in successful settlement negotiations or, when settlement is not possible, trying cases successfully before the Court on issues relating to custody, child support, spousal support, orders of protection, business valuations, license/degree valuations, equitable distribution of marital assets and liabilities, post nuptial and prenuptial agreements, separation agreements, same sex marriage issues, as well as seeking enforcement and/or modifications relating to the above. Further, during the last three decades, Ms. Finkelstein has successfully filed or defended numerous appeals in the Appellate Courts.