A multisite difference-in-differences analysis pooled 8,581 clinicians across five major US health systems adopting AI scribes (Ambience, Nuance DAX, Abridge) within Epic. Compared with nonadopters, AI scribe use was associated with modest but statistically significant reductions in EHR time: 16 minutes less documentation per 8 hours in clinic translating to a 10% relative reduction. As expected, this benefit is amplified with “heavy” use (in ≥50% of encounters) with nearly 30-minute reductions in documentation per day. Subgroup analyses also showed larger gains among primary care and medical specialties, as well as for female clinicians. | Rotenstein, JAMA 2026
