BLUE CROSS OF CALIFORNIA $61.96B 12,414,956 25,295 25,295 21.1% KAISER FOUNDATION HEALTH PLAN INC $33.27B 4,680,044 10,281 10,281 11.3% UNITEDHEALTHCARE INSURANCE COMPANY $25.31B 13,296,557 13,103 13,103 8.6% CIGNA HEALTH AND LIFE INSURANCE COMPANY $21.59B 10,648,370 13,686 13,686 7.3% AETNA LIFE INSURANCE COMPANY $19.07B 9,875,692 7,596 7,596 6.5% METROPOLITAN LIFE INSURANCE COMPANY $16.18B 61,020,363 18,324 18,324 5.5% ANTHEM LIFE INSURANCE COMPANY $8.73B 5,133,793 5,946 5,946 3.0% UNITED HEALTHCARE INSURANCE COMPANY $6.33B 2,528,396 2,778 2,778 2.2% UNUM LIFE INSURANCE COMPANY OF AMERICA $6.12B 16,127,574 16,460 16,460 2.1% HARTFORD LIFE AND ACCIDENT $5.90B 19,714,990 7,938 7,938 2.0% DELTA DENTAL OF CALIFORNIA $5.48B 14,418,420 13,943 13,943 1.9% LIFE INSURANCE COMPANY OF NORTH AMERICA $5.30B 25,383,074 11,162 11,162 1.8% THE LINCOLN NATIONAL LIFE INSURANCE COMPANY $5.22B 16,834,997 11,642 11,642 1.8% PRUDENTIAL INSURANCE COMPANY OF AMERICA $5.21B 17,828,844 3,620 3,620 1.8% THE GUARDIAN LIFE INSURANCE COMPANY OF AMERICA $4.22B 6,288,613 17,767 17,767 1.4% CALIFORNIA PHYSICIANS SERVICE $3.15B 446,603 1,079 1,079 1.1% SUN LIFE ASSURANCE COMPANY OF CANADA $2.96B 4,519,956 7,397 7,397 1.0% SECURIAN LIFE INSURANCE COMPANY $2.66B 10,285,435 586 586 0.91% VISION SERVICE PLAN $2.63B 22,431,956 16,371 16,371 0.89% UNITED OF OMAHA LIFE INSURANCE COMPANY $2.20B 12,657,943 13,164 13,164 0.75% PRIORITY HEALTH $2.16B 432,990 492 492 0.74% RELIASTAR LIFE INSURANCE COMPANY $2.09B 6,539,893 2,353 2,353 0.71% STANDARD INSURANCE COMPANY $1.91B 4,785,738 4,947 4,947 0.65% RELIANCE STANDARD LIFE INSURANCE COMPANY $1.81B 7,301,448 5,143 5,143 0.62% COMMUNITY CARE $1.60B 46,866 129 129 0.54%