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Karen Piso Nadeau

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Phone: 617-778-1000
Fax: 617-494-0043

After 20 years of impressive verdicts and settlements, senior trial attorney Karen Piso Nadeau has built a reputation as an unrelenting champion for the rights of injured people all across Massachusetts. She concentrates her practice at Bellotti Law Group, P.C. in the area of serious personal injury and wrongful death, particularly those cases involving children. Attorney Nadeau has enjoyed great success winning cases in a wide arrange of personal injury matters, from car accidents and pedestrian injuries to multi-million dollar catastrophic injuries involving negligent individuals and some of the region's largest corporate entities. Karen has also enjoyed considerable success working in the complex areas of medical malpractice, lead poisoning, and dog-bite litigation, which require a keen understanding of the case, skillful coordination of experts, and aggressive representation of the client. She is a zealous advocate for her clients and uses her legal acumen, skill, and experience to obtain the best possible results, either through artful settlement negotiation or meticulously prepared and delivered litigation.

Karen is particularly adept in the nuances of negotiations with insurers, medical providers, corporations, and other attorneys. She has worked closely with area insurance companies and is exceptionally well-versed in their policies, common arguments, and burdens of proof. As Bellotti Law Group, P.C.'s senior personal injury attorney, she has personally negotiated multi-million-dollar settlements for clients who suffered injuries at the hands of others, including negligent individuals and companies of all sizes. Often, these cases do not initially appear to have the value they ultimately reach in the eyes of insurers. Many are reluctant to offer full value in the hopes that those aggrieved by loss will accept a modest settlement offer, far below fair value. Karen, with her years of experience, knows that her negotiation strategies ensure the best result possible under the circumstances. She will not stop unless and until she is certain she has done everything she can for a client.

In short, Karen is revered and respected by her clients, co-workers, judges, and opposing counsel as one of the most talented, dedicated, and passionate personal injury attorneys in the state. She gives her full time and attention to each case, with a plethora of experts and resources at her disposal to present the best case possible. She is not afraid to go toe-to-toe with the area's most powerful individuals and corporations to get what her clients rightfully deserve.

Proven Results in Every Type of Personal Injury Action:

When she joined the firm in 2001, Karen embraced her role as a personal injury attorney. Karen came into Bellotti Law with lofty expectations, based on her stellar reputation. After a decade of work at the firm, she has far surpassed our high bar and has become the cornerstone of our successful personal injury practice. Her dedication to the cause was obvious from the beginning, as were her trial skills. Today, she oversees the personal injury practice at Bellotti Law Group, P.C. along with managing partner Peter Bellotti. On her watch, Bellotti Law Group, P.C. has amassed a remarkable resume of excellent results for its clients, and her tireless passion affects all those who work with her -- whether they are clients or fellow lawyers and staff. Quite simply, Karen does not rest until she achieves the best possible result for her client. Her enthusiasm, zeal, and hard work are infectious and she serves as a tremendous role model for younger attorneys.

An Expert in Child Injuries:

As a happily married mother, Karen is well aware of the concerns every parent has when their kids leave the sight to go to school or a friend's house. Those fears rarely become reality, but when they do, the consequences can be tragic. In these instances parents often feel helpless or paralyzed by grief. It is for this reason that Karen views working on behalf of injured children to be of particular importance at Bellotti Law Group, P.C. She handles cases involving injured and deceased children with not just the aggressive tenacity of a veteran injury attorney, but also with the sensitivity required to work with clients to ensure the best results possible during a time of immense grief and sadness. It is an impressive talent not shared with many lawyers in her area of practice.

Karen is not only a skilled and compassion child injury lawyer, but a child safety advocate who believes that every injured child is one too many. She is personally and professionally committed to holding negligent individuals and companies accountable for their wrongful actions and help families receive reimbursements for past and future medical expenses. Karen hopes that although parents cannot constantly stand guard of their children in today's chaotic world, they can take comfort in knowing there are fervent advocates for their child's safety.

Prior to joining Bellotti Law Group, Karen refined her skills as a litigation attorney, primarily handling personal injury cases but also honing trial skills as a divorce attorney. As a young lawyer, Karen quickly became acclimated to the unique pressures and demands of the courtroom. It is a place she now thrives. As a trial attorney she has an impressive resume of victories.

Karen is a lifelong Massachusetts resident and a cum laude graduate of both Boston College and Suffolk University Law School. She lives in the Boston area with her family. Karen is licensed to practice in Massachusetts, United States District Court for Massachusetts, and the First Circuit Court of Appeals.


J.D., Suffolk University Law School, Boston, Massachusetts, 1992
Cum Laude

B.A., Boston College, 1989
Cum Laude

Jurisdictions Admitted to Practice Massachusetts
U.S. Federal Courts
Client Reviews
Attorney Bellotti assisted me in a Magistrate matter in Palmer District Court. He was very professional, knowledgeable, had excellent communication skills, well prepared, and new how to handle the situation. I would highly recommend Attorney Bellotti for any litigation matters and he gets the job done. Arlon Brown
I was referred to Attorney Bellotti by a friend who works at Harvard University. I was really nervous at the beginning of my case but Peter kept me calm and was very reassuring and even gave me his cell phone number to text or call him if I really needed to get in touch with him asap… My case went extremely well and my family and I could not have been more please. I highly recommend Attorney Peter Bellotti. Beth A.
Could not have been happier with Attorney Peter Bellotti and everyone at Bellotti Law Group. I had a very difficult case, but Peter was relentless. He saved me and my family, big time, when the situation looked very bad. I was recommended to Peter and was told he was the best attorney in Boston and now I see why, 100%. Thank you Peter! John F.
When looking for an attorney I didn't think have to think twice about who to call to protect my future. Peter Bellotti's amazing reputation made it an easy decision for who to call. He went above and beyond in my case, returning phone calls promptly, answering all my questions to ease my mind, and being a very understanding caring person. Patrick
I was on a case with Peter that spanned over a year and a half. Peter was very accommodating and set early expectations which helped get through this time period. Peter's professionalism helped keep me calm during this full time period. It was a pleasure getting to know Peter and if I ever need another lawyer in and around Boston Peter would be my go to choice hands down. Kyle