The Centers for Osteopathic Research and Education (CORE) became the nation’s first accredited Osteopathic Postdoctoral Training Institution (OPTI) in 1997 and established a model for the osteopathic profession.

The American Osteopathic Association (AOA) defines OPTI as a community-based training consortium comprised of at least one College of Osteopathic Medicine and one teaching hospital. CORE internship and residency programs accommodate over 450 postdoctoral trainees.