Dr. Hieb's areas of expertise include military medicine. She has served in the U.S. Navy as a general medical officer and an orthopedic surgeon, primarily specializing in general practice and spinal disorders. Through her naval training, she is familiar with U.S. Marine Corps operational medical needs and base medical issues. Most recently, Dr. Hieb was recalled for active duty during Operation Desert Storm. In addition, Dr. Hieb is a former member of the Naval Research Advisory Committee.