Experienced legal representation fighting for your disability benefits.

At the Law Office of Katherine Sullivan, we understand the stress and uncertainty that comes with an illness or injury that prevents you from being able to work. With over fifteen years of legal experience in representing people seeking disability benefits, we are able to help our clients at every point in the process, from understanding their insurance policies to appealing and litigating denied claims. Let us focus on winning your case so you can take care of your health.

Admitted in Massachusetts and Connecticut. We represent clients throughout Massachusetts, Connecticut, Rhode Island and New Hampshire.


Evaluate your disability insurance policy and advise you regarding the terms of your policy. Review and assess your potential eligibility for Social Security Disability Benefits.


Assist and guide you through the application process for a disability claim with either the Social Security Administration or a private disability insurance carrier.


Appeal a denial or termination of benefits by an insurance company or the Social Security Administration.


Represent you at an Administrative Law Judge hearing in your claim for Social Security Disability Benefits or in filing litigation against your disability insurance carrier.

We are committed to delivering for our clients.

Atty. Sullivan is as knowledgeable, thorough, caring, efficient and effective as an attorney can be. My entire experience with Ms. Sullivan has been a very positive one, and I feel very lucky to be among her clients. I would recommend her unequivocally.

Kate provided me with top notch representation. Indeed, she is a top disability lawyer. I did a lot of research before choosing a lawyer, and determined that Kate and her firm are among the best in the business. She is very intelligent, a strategic thinker and a great communicator.

Kate Sullivan recently represented me in a legal matter. I cannot speak highly enough of her for her professionalism and top notch representation. She always communicated with me to advise me on the status of my case and never failed to respond to any inquiry I may have had. I will certainly recommend her and her firm to my family or friends who may need representation in the future.