Mary Ellen Lewis joined the Colorado Alpha Chapter at the University of Denver, Denver, Colorado in 1956. She served as President of the chapter in 1958-59. She graduated from the University of Denver in 1959, with a B.S. in Business Administration. She joined Denver Alumni Chapter in 1959. In 1961, she applied and was accepted to the State Department’s Foreign Service. She worked in Thailand, Laos, Cambodia and Pakistan. Upon her return in 1966, she immediately rejoined the Denver Alumni Chapter. She served in all officer positions at the chapter level. During this time, she also worked at the University Colorado Denver as an Administrative Officer in the College of Business. She taught courses there, and earned her Master’s Degree in Public Administration, Human Resources, in 1985. She served as advisor to the Gamma Iota Chapter in the College of Business from 1972 – 1998 and retired in 1997.

In 1973, she became active in Phi Chi Theta at the national level – District Director, 1973 - 78, Vice President for Expansion, 1978 – 80, Vice President for Internal Affairs, 1980 - 1982, National President, 1982 – 1984, Chair of the Policy Board, 1984 – 1986, Vice President of Alumni Affairs, 1989 – 1992, Vice President of Expansion, 2008 - 2012. During the 2012 National Meeting, Mary Ellen was appointed Policy Board Chair.

In her spare time, Mary Ellen has kept busy with contract work, but is extremely pleased with being a volunteer at the Denver Hospice, in Medical Records. In addition, she is a Trustee of the Phi Chi Theta Educational Foundation, where she serves as Treasurer and Scholarship Chair.