A case study design was used to determine the reliance on technology assessment of decisionmakers in hospitals, health maintenance organizations (HMOs), and third-party payers. Thirty different organizations were contacted and semistructured interviews conducted. The study found that hospitals, HMOs, and insurers are conducting technology assessments, but the form and sophistication of these analyses range widely. Hospitals are particularly focused on traditional financial analyses (“prudent purchasing”) with the exception of pharmacy committees, which generally conduct more sophisticated socio-economic analyses. HMOs and insurers conduct outcome assessments for coverage of expensive or controversial technologies but exclude economics. Technology assessment will become increasingly important in resource allocation decision making and it is in the interest of technology providers to foster better information, a more comprehensive assessment process, and a more efficient assessment system.