chart-review
(3)
Layer Health
Layer Health is a Boston-based healthcare AI company, spun out of MIT, that uses large language models to automate medical chart review. Its platform reasons over longitudinal patient records to answer complex clinical questions with evidence-based justifications, powering clinical registry automation, quality measurement, clinical pathways and real-world data abstraction for hospitals and health systems. Founded in 2023 and backed by a $21M Series A led by Define Ventures, the company counts health systems such as Intermountain Health, MultiCare and Froedtert among its partners.
Zach Rosen
Zach Rosen is the co-founder and CEO of Brellium, a New York healthcare startup whose AI reads every patient chart a provider group produces, checking it against more than a thousand clinical and payor standards before a claim ever goes out. He started the company after a personal misdiagnosis cost him two years that, he learned, a few unchecked boxes in a chart could have prevented. A Berkeley Haas grad who passed through Paycom engineering, Moelis investment banking, and a first healthcare venture called Sapien, Rosen raised a $16.7M Series A in April 2025 from First Round Capital and Left Lane Capital and counts Grow Therapy, Talkiatry, Headspace, and Rula among Brellium's customers.
Charta Health
Charta Health is a San Francisco AI startup building a pre-bill chart review platform that reads every patient encounter, catches coding mistakes and missed revenue, and flags compliance risks before claims go out the door. Founded in 2023 by two ex-Rockset engineers who got themselves certified as medical coders, the company raised a $22M Series A in 2025 led by Bain Capital Ventures.