R1 RCM Inc. is a provider of revenue cycle management (RCM) and physician advisory services (PAS) to healthcare providers. The Company is engaged in providing management services of revenue cycle operations for the United States-based hospitals and other medical services providers. Its primary service offering consists of end-to-end RCM, which the Company deploys through a co-managed relationship or an operating partner relationship. The Company's PAS offering assists hospitals in complying with payer requirements regarding whether to classify a hospital visit as an in-patient or an out-patient observation case for billing purposes. The Company also provides customers with retrospective appeal management service support for both governmental and commercial payers. Its physicians conduct detailed retrospective reviews of medical records to identify medical necessity for hospital services and the required documentation to support an appeal.