Jack Hensold, MD, has been a provider at Bozeman Health Cancer Center since 2004. Board certified in hematology, medical oncology, and internal medicine, Dr. Hensold completed medical school at Rush Medical College of Rush University Medical School. Following a residency in internal medicine at University of Wisconsin Hospital and Clinics in Madison, Wisconsin, he completed fellowship training in hematology and medical oncology at Beth Israel Hospital and Harvard Medical School in Boston.

Dr. Hensold was an instructor of medicine at Harvard Medical School and a visiting scientist at Massachusetts Institute of Technology prior to joining Case Western University in Cleveland. There, he served as associate professor of medicine and ran a research lab funded by grants from the National Institutes of Health, the American Cancer Society, and the Veterans Administration. He became the director of the hematology and medical oncology fellowship program at Case Western, and served as the chair of the Scientific Review Board for the American Cancer Society in Ohio.