Dr. Hertler became Evolent’s chief medical officer emeritus and senior advisor in January 2025, following more than a decade as CMO. A board-certified oncologist with 29 years of experience in clinical practice, he is currently focused on advancing innovation for Evolent's oncology management solution.

Dr. Hertler is a nationally recognized leader in the management of oncology practices, He is a past member of several American Society of Clinical Oncology committees, including the Clinical Practice, Quality of Care and Payment Reform committees.

Before joining Evolent, Dr. Hertler  was the administrative medical director for physician practices at Maine General Medical Center and the medical director of the Harold Alfond Center for Cancer Care in Augusta, Maine. He is a past president of the Northern New England Clinical Oncology Society. Earlier in his career, Dr. Hertler was assistant professor of medicine in hematology/oncology at the Louisiana State University Medical School. 

Dr. Hertler received his medical degree from the University of Michigan and completed his residency in internal medicine at University of Michigan-affiliated hospitals. He later completed a fellowship in medical oncology/hematology at Duke University Medical Center. He received his bachelor’s degree in chemistry with highest honors from Dartmouth College.