M. Katherine Sullivan

Katherine Sullivan is a disability attorney who focuses her practice on helping individuals pursue Social Security Disability Insurance and private disability benefits. She represents clients seeking SSDI benefits as well as short-term and long-term disability benefits through employer-sponsored and individual policies. Her work includes helping clients with initial applications, internal appeals, settlement discussions, mediation, and litigation. Through careful preparation and clear guidance, she helps clients navigate difficult disability claims and protect important sources of income.

Ms. Sullivan earned her J.D. from the University of Connecticut School of Law. She also holds a B.A. from Providence College. Her legal education provided a strong foundation in advocacy, legal research, and litigation strategy. This background supports her work in disability law, where detailed documentation, careful analysis, and a strong understanding of both public and private benefit systems are essential to helping clients pursue and protect disability income.

For many years, Ms. Sullivan has represented individuals seeking disability benefits at every stage of the process. She assists clients with SSDI claims before the Social Security Administration and also handles short-term and long-term disability claims, including those governed by ERISA and those controlled by state law. Her broad experience allows her to advise clients on benefit eligibility, overlapping programs, and strategies to minimize offsets while protecting all available benefits under the law.

Katherine Sullivan is admitted to practice in Massachusetts and Connecticut, as well as in the United States District Courts for Massachusetts and Connecticut and the United States Court of Appeals for the First Circuit. She has also presented to support groups, physicians, and treatment providers about disability systems and claims. Through her practice, she continues to help clients understand complex disability programs and pursue the benefits they need with informed, dedicated legal representation.

Law Office Affiliations

• Founder, The Law Office of Katherine Sullivan
• Member, Massachusetts Bar Association
• Member, Connecticut Bar Association
• Member, American Bar Association
• Member, American Association of Justice
• Member, Federal Bar Association
• Member, National Organization of Social Security Claimants Representatives

Licensed State

• Connecticut
• Massachusetts

Education

• University of Connecticut School of Law
  Juris Doctor (JD)
• Providence College
  Bachelor of Arts (BA)

Awards & Badges