Notes: HMO enrollment includes enrollees in both traditional HMOs and point-of-service (POS) plans through: group/commercial plans, Medicare, Medicaid, the Federal Employees Health Benefits Program, direct pay plans, and unidentified HMO products. State penetration was calculated by InterStudy using state population from the U.S. Census Bureau as of July, 2004. *District of Columbia plans' lives include lives for surrounding states.
Source: HealthLeaders-Interstudy, The Competitive Edge, Spring 2005, Part II: Managed Care Industry Report, June 2005, Table 12, p.42 (state data) and Figure 9, p.47 (total U.S. data), using data as of July 1, 2004.
