Yeji X

Market position

Yeji X positions itself in the US value-based care analytics market, arguing that most value-based organizations cannot reliably identify which patients are closest to an avoidable admission because EHR, claims and imaging data sit in separate systems and worklists are typically built from only one of them. It targets Nashville, a market described as home to more than 900 healthcare companies including HCA Healthcare generating roughly $97 billion in annual revenue, with Oracle announcing a headquarters relocation there to expand its healthcare data business.

The company's stated differentiator is reading EHR, claims and imaging data together for every patient rather than ranking risk from a single data source, and pairing the resulting risk ranking with a specific recommended intervention and timing in one output.

Technology

The platform is based on multimodal AI that jointly analyzes electronic health records and medical imaging, extended with claims data and, in the post-discharge setting, remote patient monitoring and wearable device data. Outputs are a risk ranking across a patient roster plus a recommended next best intervention and timing per patient. Integration is with existing EHRs, PACS imaging systems and claims sources. In published research, company authors describe CHASE, a hierarchical multi-label chest X-ray classification framework built on a shared Vision Transformer backbone that jointly optimizes multi-level supervision, global KL probability alignment across levels, and a hierarchy-violation penalty over a three-level taxonomy of 9 regions, 17 sub-regions and 28 findings, reporting 74.26% probabilistic hierarchy consistency and level-wise attention maps for anatomical grounding.

Go-to-market

The company recruits pilot partners directly through its website, targeting a selected group of value-based organizations, and has built its US presence in Nashville, Tennessee to gather feedback from local hospital customers from the product development stage. It chose the Nashville ecosystem rather than Boston or Silicon Valley because of the local concentration of value-based care and healthcare IT companies, and joined the Nashville Entrepreneur Center's Project Healthcare accelerator, which provides direct access to decision-makers at large hospital systems, investors and insurers plus support for technology validation and pilot projects. The company also presented in the Healthcare Innovation showcase at Nashville Entrepreneur Day in May 2026.

Value-based care organizations carrying two-sided risk, including independent accountable care organizations participating in the REACH and LEAD models, hospital systems, and their executives and care management teams.

Geography

US headquarters in Nashville, Tennessee, chosen as the company's first US base; a Seoul, South Korea location appears on company-affiliated research publications, and the company participates in Korean government startup programs administered by the Ministry of SMEs and Startups.

History

Yeji X operates from a US headquarters in Nashville, Tennessee, with a Korean corporate presence and Seoul-based research staff. It raised a seed round led by Kakao Ventures with participation reported from Schmidt, and on that recommendation was later selected for the TIPS Global Track. In 2026 it joined the Nashville Entrepreneur Center's Project Healthcare accelerator and expanded its scientific advisory board with Seoul National University professor Chang-Min Park and KAIST professor Yoonjae Choi.

Risks & controversies

Company materials describe pilots and program selections rather than commercial deployments at scale, and public sourcing includes no disclosed revenue, customer counts or independent clinical validation of the readmission prediction pipeline. Publicly cited product statistics, such as a 64% reduction in population risk after intervention, appear in illustrative interface examples on the company's own website.