Designated Institutional Official (DIO)
The individual at a sponsoring institution who has the authority and responsibility for oversight of all ACGME-accredited programs.
Definition
The Designated Institutional Official, commonly referred to as the DIO, is the institutional leader responsible for all ACGME-accredited programs at a sponsoring institution. The DIO must have the authority to make decisions affecting GME across the institution, including oversight of program directors, compliance with institutional requirements, and ensuring that programs meet ACGME standards. The DIO is the primary institutional contact for ACGME and must sign off on all major accreditation submissions.
Why it matters for your program
The DIO role is a requirement for every sponsoring institution with ACGME-accredited programs. When the DIO position is vacant or inadequately supported, the institution's entire GME enterprise is at risk. ACGME expects the DIO to have real authority — not just a title — and evaluates the DIO's effectiveness during institutional reviews.
Related terms
ACGME Accreditation
The formal process by which the Accreditation Council for Graduate Medical Education evaluates and recognizes residency and fellowship programs.
Clinical Learning Environment Review (CLER)
ACGME's institutional site visit program that evaluates how sponsoring institutions support patient safety, quality improvement, and resident well-being.
Sponsoring Institution
The organization — typically a hospital or health system — that takes ultimate responsibility for all ACGME-accredited programs it sponsors.
Related Service
GME Strategy & Advisory
Ashley Wood, PhD helps programs navigate designated institutional official (dio) requirements with director-level expertise from HCA Healthcare and Vanderbilt.
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