BILL HARTMAN, MA, is conductor and director. He played trombone with the Stan Kenton Orchestra. He was a professor of music and has taught jazz bands at Missouri State University for the past 30 years. He plays in the Springfield Symphony has performed with the Les Brown Orchestra, The United States Marine Band, and is hired frequently to perform with various bands in St. Louis and Branson, Missouri shows.
LAURIE E. TIETJEN, CPA, Described as a “Renaissance Woman”, Laurie E. Tietjen possesses a wide range of
talents, abilities, and interests: Certified Public Accountant for the College of the Ozarks, medical practice business consultant, licensed educator, jazz musician, and visual artist.
Her greatest enjoyment, however, has come from playing with her dad, Fred Tietjen, MD, (orthopedic surgeon) in his jazz bands, the Kapital Kicks Jazz Orchestra and the Lake Jazz Band. He continues to “channel” his musical passion through her playing of his baritone saxophone with Caduceus, The Doctors’ Band.
GREGORY OJAKANGAS, PhD is a planetary astrophysicist, but jazz music performance has been a critically important part of his life since he was a teenager. He played jazz trombone from high school through college, graduate school at The California Institute of technology and beyond, performing in big bands and jazz combos of all sizes. He currently teaches physics at Drury University, where he performs in the university jazz program on an as needed basis.
JEFF DEL VECCHIO, PA, is a physician assistant at Mercy Springfield. He is happy to return to playing trumpet after a long hiatus from his college playing days at Southwest Missouri State University-now Missouri State University. He also enjoys playing along side his son, Jack, when he is home from college.
BILL HENNESSEY, MHA, has been at Mercy since 1989 and Currently serves as the Vice President of Mission. Bill begin playing the drums at age 10 and since then has never set his sticks aside! After playing drums in jazz and rock bands at Norte Dame, and in musical theatre at Army Community Theatre in Hawaii. Bill became our drummer in 1990. Bill loves the music of caduceus, the camaraderie of the group, and the ability to give back to the community through our performances.