Top 20 medical services by AI search visibility (2026)

What we observed in this categoryauto-generated

Kaiser Permanente is the sole brand generating any measurable AI visibility in the Medical services category, scoring 12.5% on both visibility and citation — exactly 20.8 times the category average of 0.6%. Every other tracked brand, including high-profile names like Mayo Clinic, Cleveland Clinic, and HCA Healthcare, registers 0.0% across all metrics. This concentration of all AI presence in a single brand is a structural anomaly that signals the category has not broadly optimised for AI Overview inclusion.

The visibility-citation alignment for Kaiser Permanente is perfect at 12.5%/12.5%, meaning every instance it appears it is also cited — there is no gap between being named and being trusted. The remaining 19 brands show the inverse: complete absence on both dimensions. Notably, Mayo Clinic was previously the category leader at 12.5% visibility before dropping entirely to 0.0%, a delta of -12.5 points, suggesting its prior presence was not structurally anchored and was displaced rather than supplemented.

The sources Google AI Overviews actually anchors on for Medical services queries are predominantly third-party and informational: internationalinsurance.com, kff.org, healthcare.gov, healthcaredive.com, and youtube.com lead the cited source list. None of these are the owned domains of the top 20 tracked brands. This indicates AI Overviews in this category is pulling from insurance, policy, and explainer content rather than from health system websites directly, explaining why major provider brands show near-zero citation rates.