I've been an internist for 25 years. For most of that time, I've been haunted by a simple question: why do smart, well-trained doctors miss diagnoses? Not occasionally — routinely. Twelve million Americans experience a diagnostic error every year.
That research became TerrainDx — an AI system that doesn't replace the physician's judgment but maps the full diagnostic landscape so nothing gets lost. Where a typical encounter considers 3–5 possibilities under time pressure, TerrainDx maps 60–120, organized into navigable territories with clinical action lanes. It's built for two audiences: patients who are scared and searching at midnight, and clinicians who want to see what they might be missing.
I believe the next decade of medicine won't be about AI replacing doctors. It will be about rebuilding the trust between patients and physicians — and AI can be the bridge. That's what I'm building.