Milann H. Siegfried is a registered nurse and community volunteer. She has served on or headed boards of a number of institutions, including the Tulsa Philharmonic, Tulsa Opera, Foundation for Excellence, and the American Academy of Physician and Patient.
Milann was the first female chairman of the board of Cascia Hall Preparatory School and St. John Medical Center. She has served on the National Committee for the Performing Arts, State Arts Council, Philbrook Art Museum, and was president and chairman of Gilcrease Museum. She was a trustee of the University of Portland (Oregon) and a trustee of the University of Tulsa. Milann was a member of the National Review Board, appointed by the U.S. Conference of Catholic Bishops. She is the chairman of St. John Medical Center, a trustee of Eisenhower Medical Center - California, Footsteps Committee for the Order of Holy Cross Priests, the Papal Foundation, the ALS Advisory Committee of the Judith, and Jean Pape Adams Charitable Foundation.
Milann Siegfried is the widow of NORDAM's founder, the late Ray Siegfried.