I Built PA-Trace: An On-Device MedGemma Workflow for Prior Authorization

I believe AI can improve humanity . But in healthcare, that future may start with something less glamorous: removing administrative friction . That was the idea behind PA-Trace , my submission to Google Research's MedGemma Impact Challenge on Kaggle , which ran from January 13, 2026 to February 24, 2026 . An estimated $35 billion of annual US healthcare administrative spending is tied to…