The Impact of Access Regulation on Health Insurance Market Structure. Table 7: Number of Insurers Writing Individual Major Medical Insurance and Percent of Market Held by Type of Insurer: 1995-1997[a]

10/20/2000

Type of insurer 1995 1996 1997 Percent change, 1995-1997
Number of Insurers
BCBSb 97 102 94 -3.1
Commercial insurers 483 474 448 -7.2
HMOs 128 146 149 16.4
Total 708 722 691 -2.4
Market Share
BCBSa 53.4 49.8 49.8 -3.6c
Commercial insurers 30.6 26.4 24.1 -6.5c
HMOs 15.9 23.7 26.0 10.1c
Total 100.0 100.0 100.0 --

a - Data include the District of Columbia and all states except Hawaii.

b - Includes BCBS HMOs.

c - Percentage points.