About Us Zimmer, Mathiesen & Associates is a divorce and family law attorney representing clients in Suffolk County and Nassau County on Long Island. Key specialty areas include: No-Fault Divorces, Contested or Uncontested divorces, Divorce Mediation, Spousal & Child Support, Asset Protection, Child Custody, Fathers Rights, Mothers Rights and Grandparents Rights as well as Visitations. If you or anyone you know is in search aggressive representation that cares about your family law and divorce in Suffolk County, contact the divorce attorneys of Zimmer, Mathiesen & Associates for a free consultation.