Mary Kelloff

Mary Kelloff is Craig Hospital’s Associate Chief Nurse Officer, providing executive nursing leadership across both inpatient and outpatient services. Originally from a small town in the San Luis Valley in southern Colorado, Mary joined Craig Hospital in 2015. Mary received a Bachelor of Science in Nursing from Regis University (2015) and a Master of Science in Nursing in Leadership and Administration in Nursing Healthcare Systems from the University of Colorado (2022). At Craig Hospital, Mary started as an inpatient nurse. She transitioned to the role of inpatient Clinical Nurse Coordinator in 2020 before becoming Associate Chief Nursing Officer of Craig’s outpatient program in 2023, a role she held until she became ACNO of both inpatient and outpatient services in 2025. Mary also served as a research nurse for the melanoma clinical trials team at the University of Colorado from 2018-2019.