Healthcare systems generate enormous amounts of data, but much of it lives in disconnected places — clinical notes in one system, scans in another, medication histories elsewhere. BioStack is building infrastructure to connect those pieces and turn them into datasets that researchers and medical AI developers can actually use.
Founded in 2025 by Sanat Mishra and Parth Patwa, BioStack has raised $9.5 million in seed funding, with backing from Peak XV Partners, Afore Capital, DCVC, Emerson Collective, SV Angel, Verdict Capital, Streamlined Ventures and Y Combinator. The capital will support international expansion, technology development and hiring across engineering and research.
BioStack connects information across electronic health records, clinical notes, imaging, medications, treatments and outcomes to create a more longitudinal picture of a patient’s medical journey. From that infrastructure, it produces de-identified datasets for biotechnology research and the development, training and evaluation of medical AI systems.
The scale is already substantial. BioStack says its infrastructure provides access to more than 100 million de-identified patient records and has combined several hundred thousand fragmented X-rays, MRIs and CT scans alongside several million telehealth audio transcripts. The company currently operates across healthcare systems in the US, India, Brazil and Argentina.
Those datasets can support use cases ranging from AI-model evaluation and disease modelling to biomarker discovery, patient stratification and treatment-response analysis. BioStack is also working in India on connecting cancer patients with an investigational cancer-vaccine programme. These applications depend heavily on appropriate privacy safeguards, validation and clinical oversight.
The larger opportunity is not simply collecting more medical records. BioStack’s bet is that the valuable layer sits in connecting fragmented clinical history while preserving privacy and context — giving AI developers a clearer view of how disease, treatment and outcomes unfold over time.
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Startup Unplugged
