R1 Phare OS

R1's description of the modules

Phare Intelligence is the model layer from R37, R1's agentic AI lab. The product page says it uses open-weight models tuned for RCM and interprets medical records for "accurate medical necessity determinations, precise codes, and airtight appeals." R1 describes Phare Access as patient access, eligibility and authorizations, Phare Claim as "automatically coding encounters, detecting and correcting claim errors before submission," and Phare Flow as AI agents for claim follow-up, status checks and appeals. The product page also lists Payer Atlas, a Data Platform and a Command Center, and a banner says Phare UM, for utilization management, was added in 2026.

The one named customer

The launch release names Singing River Health System, under an exclusive Phare agreement. Its CFO, Jason McNeil, says in the release video transcript that R1 "brings additional scale, additional knowledge bases." The release also quotes Intermountain Health's CFO on R1 services, which is not a statement about a Phare deployment.

Numbers R1 publishes

The launch release claims autonomous coding accuracy "as high as 97%" for ER and physician office visits and "over 30% automation" for inpatient coding. It says Phare Flow fully automates "over 20% of payer documentation requests by dollar volume" and expects "over 70% of payer calls" to be handled by conversational AI.

The product page adds "$76B+ in Net Patient Revenue flows through the OS," "1.25B+ payer transactions processed annually," "1,500+ payer connections in Payer Atlas" and "$250+ revenue lift per discharge for Phare Audit," with no method given. R37 posts technical write-ups, such as one on post-training an NVIDIA Nemotron model to cut denials, which are vendor research, and a PubMed query on "R1 Phare" comes back empty.

Ownership and location

Funds affiliated with TowerBrook Capital Partners and Clayton, Dubilier & Rice acquired R1 in an all-cash deal at about US$8.9 billion enterprise value, or $14.30 a share. R1 announced it on August 1, 2024, it closed on November 19, 2024, and Joe Flanagan is CEO. R1 acquired Phare Health, an AI company, shortly before the platform launched, and says it has operated "for over 20 years."

Headquarters are unverified. The October 2025 launch release is datelined Murray, Utah, and later press datelines use Chicago, Illinois.

Integrations and security wording

The launch release says Phare OS is "fully integrated across all major Electronic Medical Records ('EMR') and banks, with connections to over 1,000 payers," and names no EHR. The Phare product pages carry "secure by design, governed by default" as their only security wording and name no HIPAA, SOC 2 or HITRUST attestation.

How the sale works

R1 sells outsourcing and technology under enterprise agreements, and a contact form and demo are the only routes to a quote. Whether pricing is per claim, a share of collections or a license is not stated.

The verdict

Phare OS is for health systems that want AI-driven revenue cycle software and R1's outsourced labor from one vendor. A buyer who wants software alone, with a price model published up front, has a contact form and a demo to go on.