4th Year Students at Maricopa photo

The Core Sub-internship (sub-I) is a fourth year clinical rotation taken in one of 5 core clinical disciplines: internal medicine, general surgery, pediatrics, obstetrics/gynecology, or family and community medicine. It serves as an experience which helps prepare students for residency by allowing them to function with increased responsibility compared to third-year clerkship rotations. The student in a sub-internship should function at the level of a traditional intern or post-graduate year 1 (PGY-1) learner.

Students are required to take at least one 4-week sub-internship during their fourth year in a core discipline to meet graduation requirements. This rotation must be taken with a University of Arizona faculty preceptor. The following are general criteria by which a rotation will qualify as a core sub-I. These criteria serve to distinguish a sub-I from a third or fourth year clerkship rotation or a general fourth year elective rotation.

  • Core discipline (internal medicine, general surgery, pediatrics, obstetrics/gynecology, or family and community medicine).
  • Level of responsibility similar to an intern (PGY-1).
  • Responsible for an increased patient load.
  • Typically caring for patients of higher acuity.
  • Ability to manage patients at a higher level (time management, increased independence [within supervision], complexity).
  • Must involve on-call or after hours experience, initial patient assessments and management plans.
  • Generally should be an inpatient patient care rotation.
  • If primarily an ambulatory experience, should include some emergency department, urgent care and/or ICU coverage (similar to typical PGY-1 schedule).

Although core sub-internship goals and objectives will be specialty specific, these will serve as general guidelines to designate a rotation as a valid sub-I. These rotations must be four weeks in length.

Of note, students may, and likely will, take sub-internship level electives in non-core disciplines during their fourth year, but these rotations will not count toward the core sub-I requirement.