I have watched the scope-of-practice debate for decades, from call rooms and crowded wards, from intensive care units and emergency departments, and from the deafening quiet that follows a code well run yet not won.
Early in my career, I argued the way many physicians do, with outcome data and workforce projections. Over time, I came to see that those arguments skirt the deeper question: When clinical authority expands, does accountability expand with it? That question is not adversarial. It is architectural.
The limits of protocol in an uncertain reality
Much of the literature compares protocol-bound fragments of care. Those studies answer narrow questions well. They do not capture what clinicians actually live inside, such as uncertainty, multimorbidity, social instability, and the faint early signals of deterioration that do not yet meet criteria.
Diagnostic error remains a major source of preventable harm. Yet diagnostic ambiguity fits poorly inside metric-driven systems. Throughput can be measured. Adherence can be audited. Endpoints can be graphed. Uncertainty cannot.
Clinical judgment does not appear fully formed. It is forged through years of layered training, supervised exposure to ambiguity, and graduated responsibility for consequences. Each discipline builds that preparation differently, reflecting distinct roles within the health care system. Those differences are substantive, not hierarchical. But physician training has historically centered on diagnostic synthesis under sustained ambiguity, and on assuming full accountability for that synthesis.
The patient’s need for clarity
Over decades at the bedside, I have more than once heard a worried family member lower their voice and ask, “Doctor, should I be concerned? There seem to be a lot of cooks in the kitchen.”
The question is never about professional titles. It is about clarity. Who is integrating the information? Who can move beyond protocol if the patient drifts off-script at 2 a.m.? Who ultimately bears responsibility if the synthesis is incomplete? Patients do not present as protocols. They present as unstable, evolving human beings.
At present, physicians remain the holders of ethical and legal responsibility for diagnostic decisions, and in many settings, for the clinical work of those they supervise or to whom they delegate. That arrangement is neither grievance nor privilege. It is the current architecture of care.
As therapeutic roles expand within defined domains, the issue is not whether other clinicians practice capably. Many do. The issue is whether systems preserve clarity around diagnostic authority when uncertainty exceeds protocol. When accountability becomes diffuse, patients feel it, often before policy committees do. Patients deserve to know who is responsible, not in theory, but in practice.
Task equivalence versus integrative leadership
Clarity strengthens teams. It does not diminish them. Teams function best when roles are distinct, transparent, and aligned with developmental preparation.
Discussions of parity often focus on task equivalence. Task equivalence within defined domains can be real and appropriate. But task equivalence is not the same as preparation for bearing integrative diagnostic responsibility under sustained ambiguity. Complex care requires integrative leadership, not because other team members lack expertise, but because synthesis cannot be ownerless.
Modern health systems reward measurable endpoints and rapid throughput. Yet outcomes are often shaped long before a dashboard reflects them, in the quiet cognitive work of pattern recognition, anticipation, and accountability.
This is not a call to restrict roles. It is a call to restore clarity for the sake of patients, and for the integrity of those who serve them. It is stewardship.
Gus W. Krucke is an internal medicine physician.
