Case Study - Depression Screening Gap 2026

Most PCP practices that embed PHQ-9 screening into their Annual Wellness Visit workflow assume they've solved depression screening. The data tells a different story.

We analyzed 24 months of encounter data, screening records, diagnosis codes, and medication histories across a 40,000-patient multi-site PCP network. Despite a fully implemented screening protocol, only 7.2% of attributed patients had received a PHQ-9 in the prior 12 months. 93% had never been screened — not once.

This insight brief maps the full screening funnel, quantifies the downstream action gap, identifies the structural bottleneck, and models what a proactive telephonic outreach program could shift within 12 months.

A data analysis of 40,000 primary care patients reveals why PHQ-9 screening at Annual Wellness Visits is only reaching 7% of the panel — and where the real behavioral health gap sits.