Legion Health

Legion Health is a full-stack, AI-native telepsychiatry clinic founded in 2021 and backed by Y Combinator. The company employs its own clinicians, holds its own insurance contracts, and uses large language models to automate large parts of care delivery, including scheduling, billing, clinical decision support and personalized follow-up. It provides medication management for conditions such as ADHD, anxiety and depression, with visits often costing under $30.

The engineering work centres on natural language processing and LLM-based workflow automation running in the background of clinical care. The stated approach is to start with world-class clinicians, instrument everything, and automate the workflow step by step. The clinic currently operates in Texas, with plans for national expansion across the United States.

Legion Health reports annual recurring revenue of more than $3m. The company was founded by three co-founders - Yash Patel, Daniel Wilson and Arthur MacWaters - who were Princeton roommates and whose backgrounds span healthcare policy at the Congressional Budget Office, big tech at Microsoft and consulting at McKinsey. The team is small, and exact headcount has not been disclosed.

The company started as a B2B healthcare staffing business and pivoted to a full-stack AI clinic following the emergence of ChatGPT. Its stated mission is to make psychiatric care available to everyone with insurance, with an emphasis on responsible scaling alongside automation.