Diane Werner is the founding Chair of Mosaic of Westchester, an organization dedicated to making the Westchester Jewish community more Lesbian, Gay, Bisexual, Transgender and Questioning (LGBTQ+) inclusive. Founded in 2013, Mosaic has acted as a catalyst, facilitator and resource, guided by the conviction that becoming inclusive will enrich us all by making our community more diverse and more connected. The organization transitioned to operate as a committee of the Westchester Jewish Council in 2018.

Diane has served on the Executive Board of the American Jewish Joint Distribution Committee and on the Board of the Westchester Jewish Council. She is a past President of Westchester Hebrew High School and currently serves on the Cabinet of the Jewish Life Department for UJA- Federation of New York. Diane began her career in account management at Ogilvy & Mather and then went on to found WB&E Realty, a real estate management firm. She received an MBA and MA in Journalism from Columbia University. She and her husband, Michael, are the proud parents of Zack, Adam, Evan, and Matt and Jules. They live in White Plains, New York.