If you manage health benefits for a large employer, you already know the broad strokes: healthcare costs keep climbing, chronic conditions keep multiplying, and the annual renewal conversation keeps getting harder. What you may not realize is just how wide the gap between assumed preventive care and actual preventive care really is—or how much that gap is adding to your bottom line.

A recent multi-employer, multi-year claims analysis covering more than 35,000 working-age adults paints a striking picture. Across several large, self-insured employers, roughly 40% of their combined adult population had no record of an annual preventive exam at all. Not a missed screening here or there—no annual physical, period.

That alone should give benefits leaders pause. But the more surprising finding is what happened among the other 60%—the employees who did engage in preventive care. Even among those who saw a traditional primary care provider for their annual exam, the quality, completeness, and cost outcomes fell well short of what a structured preventive care program could deliver.

In other words, the prevention gap isn’t just about the people who skip their exams. It’s about the quality of care the rest of your workforce is actually receiving.

The 40% Problem: When Prevention Simply Doesn’t Happen

Let’s start with the most obvious issue. In the claims analysis, the cohort of adults who did not engage in any form of annual preventive care—labeled the “No Prevention” group—produced the worst outcomes across nearly every metric measured.

Their year-over-year medical cost trend was +8.0%, nearly double the overall employer average of +4.8%. Emergency room utilization was 16.4% higher than the employer adult average. Non-maternity inpatient admissions ran 26.4% above average, and inpatient days were 32.4% above average.

These aren’t marginal differences. For context, the average cost of a non-maternity inpatient admission across these employers ranged from roughly $7,200 for mental health stays to over $70,800 for surgical admissions, with a weighted average around $33,900. Every avoidable admission that results from skipped preventive care carries a significant price tag.

The data also showed that 40% of these employers’ adult populations fell into this No Prevention category. If your organization mirrors these numbers, that means nearly half your workforce is driving the highest-cost utilization patterns—and they’re doing so without even the baseline protective benefit of an annual exam.

The Subtler Problem: When Prevention Happens, But Not Well Enough

Here’s where the conversation gets more nuanced. Most benefits leaders assume that if employees are seeing a primary care doctor for an annual physical, the prevention box is checked. The claims data tells a different story.

The study compared employees who received preventive exams through a comprehensive, structured preventive care program against employees who received their annual exams through traditional primary care providers. Both groups were engaged in prevention. The difference was in what that prevention actually included.

On chronic disease testing—the kind of screening that catches diabetes, heart disease, and other high-cost conditions early—the comprehensive preventive care cohort achieved 100% completion rates across every category measured: hypertension lipid panels, hyperlipidemia lipid panels, coronary artery disease lipid panels, HbA1C tests for diabetes, LDL-C screening for diabetes, and general cholesterol screening.

Traditional primary care? Rates ranged from 59% to 87% across those same categories. That’s not a failing grade, but the gap is meaningful. When 13% to 41% of your employees with known chronic conditions aren’t getting their recommended annual tests, conditions progress, costs escalate, and what might have been managed with medication or lifestyle changes becomes an ER visit or an inpatient stay.

Cancer screening showed similar patterns. The comprehensive preventive care group achieved mammogram completion rates of 88% (versus 56% for traditional care and a benchmark of 86%), colorectal cancer screening at 48% (versus 33%, against a benchmark of 34%), and cervical cancer screening at 100% (versus 65%).

The Cost Difference Is Measurable—And Significant

The screening gaps translate directly into cost differences. After adjusting for age and sex differences across the cohorts, the comprehensive preventive care group’s costs averaged 8% below the overall employer adult population and 14% below the traditional primary care group.

Medical trend for the comprehensive preventive care cohort was -1.3%—a decrease—compared to +4.8% for the employers overall and +6.4% for the traditional primary care group.

That last number deserves emphasis. The traditional primary care group’s medical trend was actually higher than the overall employer average, meaning that employees who were engaged in prevention through their regular doctors were seeing faster cost growth than the blended population. Having a PCP and getting an annual physical is necessary—but it’s not sufficient.

Emergency room use tells a similar story. The comprehensive care cohort used ER services at a rate 25.6% below the employer adult average. The traditional primary care group? Their ER rate was 4.6% above average. That’s a 30-percentage-point spread between two groups of employees who are both technically “getting preventive care.”

Why Structured Preventive Care Outperforms Traditional Primary Care

The performance gap comes down to protocol consistency. In a traditional primary care setting, the scope of an annual physical varies by provider. Some physicians order comprehensive lab panels; others take a more selective approach. Cancer screening referrals may or may not happen in the same visit. Immunizations may be deferred. Mental health risk assessments may not be included at all.

A structured preventive care program applies a uniform clinical protocol to every exam. Every patient gets comprehensive lab work, age- and risk-appropriate cancer screenings, immunizations, mental health and lifestyle risk assessments, and—critically—post-exam health navigation that connects findings to follow-up care and employer well-being resources.

That last point matters more than it might seem. The claims analysis found that participants in the comprehensive preventive care program showed 35.2% higher engagement with employer musculoskeletal programs and 30.9% higher engagement with chronic condition management programs compared to the overall adult average. Prevention, when done comprehensively, doesn’t just catch problems—it activates the rest of your benefits ecosystem.

What This Means for Benefits Leaders

If you’re managing benefits for 10,000 or more employees, these findings point to two strategic imperatives.

First, close the participation gap. Forty percent of your workforce likely isn’t engaging in preventive care at all. These employees are generating the highest ER utilization, the highest inpatient rates, and the fastest-growing costs. Any strategy that doesn’t address this group is leaving the largest cost driver untouched.

Second, raise the quality bar for the employees who are engaged. Checking the “annual physical” box with a traditional PCP visit is a start, but the data shows it’s not delivering the screening completeness, the care coordination, or the cost outcomes that a structured preventive program achieves. The difference between 59% and 100% completion on chronic disease testing isn’t academic—it’s the difference between catching a condition early and managing it through a $70,000 surgical admission.

The prevention gap is real, it’s measurable, and for most large employers, it’s significantly wider than leadership realizes. The good news is that it’s also closable—with the right program design, the right clinical protocols, and the right engagement strategy.

This article draws on findings from a multi-employer, multi-year claims analysis conducted by EHE Health, covering more than 35,000 working-age adults. For the full study methodology and detailed findings, download the complete white paper: “Can Increasing Adult Preventive Care Reduce Costs and Lower Medical Trend?”