Miriam Kosowsky, Attorney – Mediator


MIRIAM KOSOWSKY, J.D., is a graduate of Harvard Law School cum laude. Prior to working with Diane Neumann & Associates, she mediated in the Middlesex, Norfolk, and Suffolk county courts. Miriam operated a private mediation practice which included a wide array of civil disputes, such as family, contract, property, and labor disputes. Miriam was a successful trial attorney with a well-known Boston law firm and litigated as well as negotiated complex civil cases.

At Harvard Law School, she was the president of the Family and Children’s Rights Project and worked in the family division of the Jamaica Plain Legal Services Center. Miriam received her B.A. in psychology from Barnard College, graduating summa cum laude, with a concentration in child-related courses such as child development, and spatial representation in children. While at Barnard, she worked in a preschool in New York City.

Miriam was an attorney at Sullivan & Worcester, LLP, in Boston, where she litigated, negotiated, and settled business, contractual, and tort disputes for domestic and international private and corporate clients. Through her pro bono representation of families at the Catholic Charities Bureau, she worked to protect families and children. Miriam is a former assistant district attorney for the Norfolk County District Attorney’s Office, and, during this employment, she received extensive training in domestic violence as well as custody disputes.

At Diane Nuemann & Associates, her areas of expertise include creative parenting plans, alimony and its implications and consequences, residential and commercial real estate, and both complex and simple asset distribution and allocation.

Miriam’s goal is to help clients reach fair agreements that satisfy each client’s essential interests. She seeks her clients’ satisfaction with their divorce agreement, not only at the time of signing, but for years in the future.


Degrees and Qualifications
  • J.D., Harvard Law School, cum laude
  • B.A., Barnard College, summa cum laude