Bayesian Health

What is Bayesian Health and who sells it?

Bayesian Health Inc. is based at 2 River Terrace, New York, according to the FDA clearance letter. It is a Johns Hopkins spinout led by Suchi Saria, PhD, who is founder and CEO. The company's homepage describes a real-time clinical intelligence platform that monitors every patient continuously. Target areas beyond sepsis include readmissions, deterioration, palliative care, transitions of care, heart failure, hospital-acquired pressure injuries and malnutrition.

The sepsis feature descends from TREWS, a system built at Johns Hopkins, according to press coverage of the clearance. The company's own site does not mention TREWS. Healthcare Brew describes Cleveland Clinic as an investor or supporter, without an amount.

What exactly did the FDA clear?

The device is the Bayesian Health Sepsis Flagging Device, K250680, cleared on 30 April 2026 through a Traditional 510(k) (Class II, 21 CFR 880.6316, product code SAK). The company announced it on 12 May 2026, after an earlier Breakthrough Device Designation. The indication is continuous monitoring software to aid early detection or risk prediction of sepsis developing within 24 hours. It analyses EHR data and shows a "Sepsis Risk High" flag in the EHR, for adults 18 and over, and it must not be the sole basis for diagnosis.

The predicate was Prenosis Sepsis ImmunoScore, authorised through De Novo (DEN230036) in 2024. Bayesian's "first" therefore rests on the company's own wording: first continuous monitor with a 510(k).

Bayesian describes EHR integration as native and says it works within "leading EHR systems", naming Epic only as a comparison. It lists no live EHR sites, and no HIPAA, SOC 2 or HITRUST attestation.

What does the evidence say?

The key study is a 2022 Nature Medicine paper by Adams and colleagues, a prospective multi-site study of the TREWS system covering 764,707 encounters at five hospitals. The press release says alerts came 5.7 hours earlier, sensitivity was 82%, and in-hospital mortality was 18% lower when alerts were acted on. Those are the company's figures. The design was observational rather than a randomized trial, and whether the cleared device differs from the TREWS version in that paper is unknown.

The homepage adds adoption and outcome claims across real-world customers, including 81% adoption, a 5.5% absolute mortality reduction and 1.9 days shorter stay. It also claims alert volume 20 times lower than Epic's sepsis algorithm at one customer. All of it is vendor marketing. The only PubMed paper linked to the company, a 2022 article in Med on lessons from deploying sepsis machine-learning models (PMID 36087573), comes from the TREWS lineage and is not a trial of the cleared device.

How much does Bayesian Health cost?

Bayesian lists no price. A CMS New Technology Add-on Payment under the FY2027 IPPS final rule began on 1 October 2026, covering up to $61.84 per eligible Medicare fee-for-service inpatient case for up to three years (company release, 2 September 2026). Medicare pays that to the hospital. The hospital's own contract fee is a separate number.

How does it compare?

Prenosis Sepsis ImmunoScore is the cleared peer. Dascena, CLEW, Philips and Cerner offer sepsis tools too, and Epic has its own sepsis model.

The verdict

A hospital that already tracks sepsis bundle compliance has the baseline to run a before-and-after evaluation. Before committing, ask how many hospitals are live and what the alert-to-patient ratio is at a site like yours.