The hospital was the first in Indiana with an American College of Surgeons-verified Level III Trauma Center.

[2] As a teaching hospital, IU Health Arnett takes medical, nursing, allied health professions, and other healthcare-related students from the nearby Indiana University School of Medicine (IUSM), Purdue University College of Health and Human Sciences, and Ivy Tech Community College of Indiana campuses.

[5] In February 2015 IU Health Arnett Hospital started an $18 million expansion to add 100 patient exam rooms, three stories, and 75,000-square-ft to the facility.

Arnett graduated from the School of Medicine of Purdue University in 1907, now a part of IUSM.

Daniel Neufelder became president of IU Health West Central Region in May, 2018 succeeding Donald Clayton M.D.