Judge Wan was appointed to the New York State Court of Claims by Governor Andrew Cuomo on June 20, 2018. Judge Wan is currently designated as an Acting Supreme Court Justice in Kings County Supreme Court, Civil Term, where she presides over an IAS part. Prior to that, Judge Wan presided over an Integrated Guardianship Part, in New York County Supreme Court, where she heard cases involving tenants who are the subject of both a Civil Court, Housing Part case and a Supreme Court Mental Hygiene Law Article 81 case. Judge Wan was originally appointed to the bench by Mayor Michael R. Bloomberg in 2012, and served in both Bronx County Family Court and Kings County Family Court for 6 years, hearing cases involving child abuse and neglect, custody, visitation, family offenses and juvenile delinquency. Prior to taking the bench, Judge Wan was a Court Attorney-Referee in Kings County Surrogate's Court where she handled adoption, guardianship, and trusts and estates matters. In this capacity, Judge Wan conducted pre-trial and settlement conferences with attorneys and self-represented litigants and presided over guardianship hearings involving adults with development disabilities and kinship hearings to determine who inherits an estate. Judge Wan also served for nine years as a trial attorney at the Administration for Children's Services (ACS) in the Family Court Legal Services Division, where she tried and supervised hundreds of abuse and neglect trials.

Judge Wan is the current president of the Asian American Judges Association of New York. Judge Wan was also appointed to serve as the Co-Chair of the New York State Advisory Committee on Judicial Ethics. Judge Wan is also on the Board of Trustees for the Historical Society of the New York Courts. Judge Wan formerly chaired the Family Court and Family Law Committee at the City Bar, served on the City Bar’s Nominating Committee, and is now serving on the Diversity, Equity, and Inclusion Committee. Judge Wan also serves as a board member for the Brooklyn Women's Bar Association and is a member of the Brooklyn Bar Association Diversity Committee. Judge Wan previously served on the board of the New York State Family Court Judges Association and was the past Vice President and Secretary of the New York City Family Court Judges Association.

Judge Wan has also served on the Unified Court System’s Advisory Committee on Court Interpreting and the Appellate Division Second Department Mental Health Professionals Certification Committee, a committee charged with assessing the qualifications of potential court appointed mental health experts. Judge Wan is the former co-chair of the Government and Public Sector Committee for the Asian American Bar Association of New York. Judge Wan has been an active participant in the National Association of Women Judges “Color of Justice” Program, which has been geared towards introducing NYC high school students to the legal profession. Judge Wan regularly participates in various “Meet the Judges” events in the community and has presented on career panels at various NYC schools. Judge Wan earned her undergraduate degree from Binghamton University and her law degree from Albany Law School, where she served on the Albany Law Review.