Yan Chow

Yan Chow is a San Francisco-based solo angel writing $25K to $100K checks at pre-seed and seed into AI/ML in healthcare and digital health. He brings physician-investor credibility to a Bay Area network that already over-indexes on healthcare AI, and the explicit AI focus marks him as someone who actively wants to see model-driven clinical software, not just digitization of existing workflows. The check size positions him as a conviction angel rather than a round-leader, useful as a clinical reference and signal investor alongside a specialist seed fund such as a16z Bio + Health, Define, or Y Combinator’s healthcare cohort. Founders most likely to fit are technical teams building AI for clinical decision support, ambient documentation, imaging interpretation, payer-provider workflow automation, or LLM-native consumer health tools where a physician-investor’s pattern recognition on regulatory and adoption risk is genuinely additive. Companies in pure biotech, devices, or care delivery without a software core are weaker fits. Geography matters: he will be most useful to West Coast founders who can grab in-person time, though he likely participates in select East Coast and global rounds via warm intro. The entry path is a LinkedIn message, ideally via a mutual connection from the Bay Area healthcare investing or operator community. Lead with the model, the data moat, the clinical co-founder or advisor, and the specific risk you want a physician-investor to underwrite. A generic deck without a clear clinical wedge will not get a meeting.