About Us
Our goal is to achieve the best outcome for your case, always keeping your best interests in mind. Contact us to learn more about how we can help you with your legal needs.
Long Island Divorce Attorney
We understand that every family is unique and requires individual attention, which is why we take the time to listen to your concerns and develop customized legal strategies to meet your needs. Our goal is to achieve the best outcome for your case, always keeping your best interests in mind. Contact us to learn more about how we can help you with your legal needs.
Our Experts
Guiding Your Legal Journey with Expertise and Compassion
Discover peace of mind with our seasoned professionals bring both expertise and empathy to your legal concerns, ensuring you’re in capable hands every step of the way
Theresa A. Mari
Theresa A. Mari has been a children’s advocate and attorney in private practice for 30+ years. She is also an entrepreneur and former general counsel to multiple businesses. Because of her depth of experience, she exhibits strong leadership skills and is an expert on small business development and handling legal and business matters.
SARA B. CARISSIMI
Sara B. Carissimi has been a member of Theresa A. Mari, P.C. since its inception in 2015 and was named a partner in 2021. Sara has been engaged solely in the private practice of representing clients in Family Law and Divorce matters and excels in both negotiation and litigation complex cases for her clients.
Catherine Frasier
Catherine Frasier has been executive assistant to Theresa Mari for 20+ years. With her exceptional organizational skills, attention to detail, and strong communication abilities, Catherine plays a pivotal role in ensuring the smooth functioning of Theresa Mari’s legal practice.
Our Mission & Vision
Experienced and Compassionate Family Law Representation on Long Island
At the Law Office of Theresa A. Mari P.C., our mission is to provide exceptional legal representation to our clients, helping them navigate the complex legal process with confidence. We strive to develop long-term relationships with our clients, earning their trust and building a reputation for excellence in Family Law. Our vision is to be the premier Family Law firm on Long Island, known for our expertise, dedication, and commitment to achieving favorable outcomes for our clients. We believe in providing compassionate and personalized legal services, treating each case with the attention it deserves, migrating the complex legal system while providing knowledge and support, and always keeping our clients’ best interests in mind. Whether you’re going through a divorce, need help with child custody, or have other Family Law matters, we’re here to help you achieve your legal goals.
Our Story
At the Law Office of Theresa A. Mari P.C., we have a unique approach to Family Law representation that sets us apart from other law firms. Here’s how we got started:
A Passion for Helping Families
Theresa A. Mari has always been passionate about helping families navigate the legal process with ease. After graduating from law school, she knew that Family Law was her calling. She started her legal career working for a prominent Long Island law firm, where she gained invaluable experience handling complex Family Law matters. She quickly developed a reputation for excellence, earning the trust of her clients and colleagues alike.
A Commitment to Personalized Representation
Despite her success at the law firm, Theresa A. Mari felt that she could better serve her clients by starting her own practice. She wanted to create a law firm that was focused on providing personalized representation to each and every client. She founded the Law Office of Theresa A. Mari with a commitment to treating each case with the attention it deserves, and always keeping her client’s best interests in mind.
A Reputation for Excellence
Since founding the Law Office of Theresa A. Mari P.C., she has built a reputation for excellence in Family Law representation on Long Island. Her dedication to her clients has earned her numerous accolades and awards, and she is widely regarded as one of the top Family Law attorneys in the area. She continues to provide compassionate and effective legal representation to her clients, helping them achieve favorable outcomes in even the most challenging legal situations.