Karen Nadeau

Personal Injury Lawyer

Because It’s Personal™

Formerly of Nadeau Harkavy LLC and currently affiliated
with Law Offices of Michael F. Mahoney

Pedestrian struck by car in crosswalk

$600,000

Rear end accident with neck injury

$1,000,000

Trip and fall in unsafe parking lot

$175,000

Slip and Fall in unsafe restaurant

$325,000

Driver rear-ended and injured

$425,000

Pedestrian Accident

$600,000

Free Initial Consultation
No Fee Unless I Recover
best possible results

Massachusetts Personal Injury Lawyer with over 30 Years of Experience Representing Those Injured in Accidents.

Why Karen Nadeau?

Because it’s personal™

Formerly of Nadeau Harkavy LLC and currently affiliated with Law Offices of Michael F. Mahoney.

In the aftermath of any accident or injury, there’s a story that goes beyond the incident—a tale of a cherished family member, a beloved son or daughter. Karen Nadeau understands that every moment is deeply personal.

I don’t just handle cases, I embrace them as personal missions

With over 30 years of experience, I am dedicated to representing individuals and their families. I approach each case with genuine care and unwavering compassion. Working as an attorney with a proven track record of successful results, I am committed to a standard of excellence and never giving up until my clients get what they deserve.

My commitment is more than legal – it’s personal

When the insurance company deliberately undervalues my client’s case, I take this personally. I take on the insurance company with my experience, resources, and knowledge of the law. I know the system and how to get my clients the compensation they deserve.

The Karen Nadeau Difference

Approachable

You deal directly with a lawyer, not a paralegal, secretary, or junior attorney.

Knowledge & Experience

I have over 30 YEARS of experience representing personal injury victims.

Strong Communication

I promptly respond to your calls, texts, and emails.

Compassionate

I am a woman after all. You are more than a number or another case to me.

Stress Free

I take away your worry and stress about your case, so you can focus on getting better.

I Fight for YOU

I do not give in to the insurance company’s attempts to minimize your case value. I don’t stop until I get the money you deserve.

5 Star Reviews

Don’t take my word for it. Read our 5 Star Client Reviews.

No Big billboards

I don’t buy billboards or advertise on TV… Because It’s Personal™.

Because It’s Personal™

Building close relationships with my clients is a core value.

Meet The Lawyer

With over 30 years of experience serving injured victims in Massachusetts, I have a proven track record of outstanding results for clients. Guided by a philosophy of treating clients as I would my own family, I strive to ease my clients’ journey from the initial phone call to case resolution. Committed to competing and fighting vigorously, I aim to hold insurance companies accountable to the fullest extent of the law. My belief in ongoing communication with my clients ensures the best possible outcomes. I am approachable and readily available to my clients. Trust me with your case, so that you can focus on your physical, emotional and financial recovery.

Karen Piso Nadeau

Personal Injury Attorney

Karen Piso Nadeau

Recent Client Reviews

  • March 4, 2026

    Karen worked so diligently on my case—on every detail, every piece of communication, everything! I felt like I had nothing to worry about. And she absolutely delivered. Such a better experience than with a male-led firm I had experienced before. Cannot recommend enough!

    – Olivia J. Krause
  • January 21, 2026

    I cannot recommend Karen and Leslie highly enough. After suffering a significant injury, I had difficulty finding legal representation willing to take on my case until I met them. From the outset, they demonstrated tenacity, professionalism, and a willingness to advocate for me when others would not.  Throughout the entire process, they were exceptionally prepared, thorough, and steadfast in their representation. They were truly the strongest advocates I could have had in my corner, and their dedication and expertise made a meaningful difference in the outcome of my case. I am deeply grateful for their hard work and commitment.

    – Jenny

I handle the following types of personal injury cases:

Bicycle Accident
Car Accident
CATASTROPHIC INJURY
PEDESTRIAN ACCIDENT
Child Injury
Construction Site
Dog Bite & Attack
Liquor Liability
Motorcycle Accident
Premises Liability
Slip & Fall
Traumatic Brain Injury
Truck Accident
Personal Injury
Wrongful Death
Food Poisoning & Allergy

Need a Personal Injury Lawyer?

Call Karen Nadeau to speak to a lawyer today

WHY Karen Nadeau?

  • Free Initial Consultation
  • No Fee Unless I Recover

  • Best Possible Outcome
  • Over 30 years of Experience

  • You Deal with Me Directly

  • My Commitment is More than Legal – It’s Personal

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