The vital signs don’t lie: Access and capacity reveal the truth about performance

Editor’s note: This article introduces a new lens for system performance. In the months ahead, this series will examine access and capacity from multiple angles—from inpatient flow and ambulatory access to workforce and patient loyalty—building a more complete view of how leading systems translate systemness into measurable results.

Every health system has vital signs. Not just clinical ones—operational ones.

They reveal whether the system is stable or under strain. Whether it’s performing as intended or compensating in ways that aren’t sustainable. And like any vital sign, when something is off, the alarms sound quickly.

Patients wait. Staff stretch. Throughput slows. Growth stalls in some areas while demand overwhelms others. Leaders respond—pushing on length of stay, ED flow, clinic access—but the pressure doesn’t resolve. It shifts.

Those aren’t isolated operational issues. They are system-level signals.

Access and capacity are the vital signs of systemness. They reveal whether a health system is truly functioning as an integrated enterprise or as disconnected parts. They also determine whether systems convert demand into growth, margin, and long-term loyalty. Access represents the patient’s ability to enter and move through the system. Capacity reflects the system’s ability to deliver care. Together, they define a health system’s ability to:

• Reach patients at the right time and the right setting
• Deliver effective and equitable care
• Capture demand and build patient loyalty
• Optimize operational and financial performance
• Fuel growth of new patients

Realized capacity—not installed capacity—determines enterprise performance. What matters is not what a system owns, but what patients can actually access when and where they need it.

The system is under strain and fragmentation is driving uneven performance

Demand is rising, driven by an aging population, increasing acuity, and growing case mix complexity—placing new strain on inpatient operations. At the same time, structural workforce shortages limit the ability to simply add supply.

But the pressure is not evenly distributed across the system.

Ambulatory demand continues to accelerate, with outpatient revenue growing 33% over the past three years. Outpatient surgical and post-acute services are projected to grow another 18% over the next decade—further shifting where and how capacity must be created.

But while health systems are absorbing more demand, they’re not consistently converting it into access across settings. And patients are increasingly unwilling to tolerate that gap. Commercially insured patients, in particular, are more likely to switch providers when timely access falls short.

The implications are not just operational—they’re financial.

Loyal patients—those who concentrate most of their care within a single system—generate disproportionately higher lifetime value. Even small gains in loyalty translate into meaningful impact: for a $2B health system, a 1% increase in loyal patients can yield roughly $40M in additional revenue. Yet 43% of patients have switched primary care providers in the past three years, driven largely by access, experience, and convenience.

That gap is where performance deteriorates. It’s also where advantage is created. Access is no longer just an experience metric—it determines who captures demand, who retains loyalty, and who sustains margin.

Health systems have spent the last decade building systemness: scale, integration, and alignment across the enterprise. That work created the foundation. But scale alone does not guarantee performance.

Systemness 2.0 is about whether the vital signs are operating at optimal levels. And this is where many organizations falter. The instinct is to treat access and capacity as discrete problems: reduce length of stay, improve ED throughput, expand clinic access, optimize block time. Each initiative is necessary, but none are sufficient on their own because the system is interconnected.

Shortening length of stay without strengthening post-acute access shifts bottlenecks downstream. Expanding ambulatory access without improving inpatient throughput exacerbates bed constraints. Optimizing operating room time without aligning clinic scheduling creates new imbalances.

Progress stalls because the system is being managed in parts, while performance is determined by how those parts work together.

Introducing the access and capacity framework

Improving performance requires a different lens. The Vizient Access and Capacity Framework provides a way to assess whether a system’s capabilities translate into actual patient access. At its core is a simple but critical distinction: there is a difference between what a system has and what it can deliver.

Health systems may have the beds, clinicians, operating rooms, and ambulatory footprint. But if those assets are not coordinated, aligned, and accessible to patients when and where they are needed, capacity remains unrealized.

The framework connects system assets, workforce, and infrastructure to the patient’s ability to access care across the continuum. It recognizes that access and capacity are not static measures. They are dynamic, interdependent, and continuously shifting.

Strengthening the vital signs requires four enterprise capabilities:

• A unified vision for care delivery
• Structural components to support that vision
• Integrated processes across the care continuum
• Measurement that links operations to financial and clinical outcomes

This is not about adding more initiatives. It’s about identifying where performance is constrained—and addressing those constraints at the system level.

Execution is the differentiator

Healthcare capacity challenges are real—but they are not purely structural.

Variation across systems’ access and capacity metrics makes that clear. A meaningful share of what appears to be constraint is, in fact, unrealized capacity—trapped in fragmentation, misalignment, and inconsistent execution. That is the divide.

Most organizations know what to do. They have no shortage of initiatives—length of stay programs, access redesign, workforce strategies, digital front doors. But too often, those efforts operate in parallel, not in concert. Activity increases, but performance does not.

Execution is the differentiator and governance is key.

Leading systems treat access and capacity as strategic enterprise priorities, not operational projects. They establish clear ownership across the continuum. They align incentives, decision rights, and performance metrics. They create the structure to act on data consistently—not episodically.

The question for leadership is no longer whether capacity it is constrained. It is whether the organization has the governance and discipline to unlock the capacity it already has.

Because when access and capacity are managed as the vital signs of systemness, they do more than signal strain. They reveal where execution is breaking down—and where coordinated action will have the greatest impact.

Organizations that get this right expand throughput, improve workforce sustainability, strengthen loyalty, and improve margins without relying on proportional capital.

Those that do not will continue to experience the same pattern: demand rises, constraints shift, and performance plateaus.

The difference between average and top-quartile performance is not incremental. It’s competitive. To get there, high-performing organizations consistently monitor these vital signs and take coordinated action across leadership, ensuring alignment, accountability, and continuous improvement.

Contributors to this article include Steve Carpenter, VP Vizient Networks; Jodi Eisenberg, AVP Member Connections; Barbara Seymour, VP Member Connections; Nicole Spatafora, AVP Performance Improvement.