Table 2. Number of Urban/Rural HMOs, by Region.

Region	Number of HMOs Serving Urban/Rural Market	Number With Medicare Risk Contracts	Number (Percent) Including Rural Counties in Medicare Service Area
Total	301	38	17 (6)
Northeast	47	4	3 (6)
Midwest	102	14	3 (3)
South	89	7	2 (2)
West	63	13	9 (14)

NOTE: HMO is health maintenance organization.

SOURCES: (Group Health Association of America, 1990); Health Care Financing Administration: Group Health Programs Office enrollment files, 1990.