The Throughput Trap

Last week, I introduced the PRM Curve as a way to think about how structure shapes the depth and continuity of physician-patient relationships.

If that framework is accurate, then we need to confront a harder truth:

Most primary care systems today remain structurally oriented toward throughput, largely as a result of longstanding payment models and access demands.

Primary care has long been defined by what Barbara Starfield described as the 4 C’s:

• First Contact • Continuity • Comprehensiveness • Coordination

These are not abstract ideals. They are the functional core of effective primary care.

These structures were not created arbitrarily. They evolved to solve real problems of access, scale, and financial viability.

But here is the question we rarely ask:

Can all four thrive when time per relationship continues to shrink?

Many systems continue to rely on productivity metrics such as RVUs, which were originally designed to support access and operational sustainability, but tend to reward volume. More visits. More transactions. More activity.

Access matters. First Contact matters.

But as visit volume expands without a corresponding adjustment in relational capacity, compression can emerge.

Continuity thins. Coordination becomes more reactive. Comprehensiveness narrows to what fits in the slot.

This is less about physician effort and more about the structures within which care is delivered.

When incentives emphasize transactions, relational depth can begin to compete for limited space. Over time, that tension shows up as fragmentation, frustration, and what we label burnout.

One variable that has been difficult to fully account for is time.

Physicians have finite relational bandwidth. When structure compresses time without adjusting panel size or visit design, erosion is predictable. Not because physicians lack resilience, but because the architecture forces tradeoffs.

This dynamic can create what might be described as a throughput trap.

Not every patient seeks the same level of access, time, or personalization. Not every physician thrives under the same structural demands. A well-designed primary care system accounts for both realities by integrating fee-for-service and membership-based models as complementary elements within a unified strategy.

The remedy is not abandoning access. It is intentional design.

Different models can coexist within a coordinated portfolio, aligning relational intensity with patient preference and physician capacity. When structure and measurement align with what we claim to value, primary care can preserve both access and depth.

Throughput is a metric.

Relationship is the mission.

Without more intentional design, throughput will tend to remain the default orientation.