McCallister retired as chairman and CEO of Humana Inc. in 2012. He joined Humana in 1974 as a finance specialist, became president in 1992 and was named CEO in 2000. During his tenure, the company pioneered Medicare Advantage Plans, Tricare and Consumer Facing Technology. He currently serves on the boards of Humana, AT&T, Fifth Third Bancorp, and Zoetis Inc.
- March 2021
Added to: Calviri Inc. - Tempe, AZ
Calviri is an early-stage healthcare company dedicated to provide fundamentally different vaccines and companion diagnostics that prevent and treat cancer.