Description Catalyst Health Solutions is cooking up efficiencies in the prescription benefits market. The company provides pharmacy benefit management (PBM) services to clients including managed care organizations (MCOs), self-insured employers, third-party benefit administrators, and hospices. Its PBM business, known as Catalyst Rx, helps clients design drug benefit plans that encourage the use of preferred prescriptions bought from one of about 65,000 pharmacies (including contracted mail order pharmacies) in the company's nationwide network. It also provides customized reporting and data analysis services. The State of Maryland and Wellmark Blue Cross Blue Shield of Iowa are its largest customers.