BLUE CROSS OF CALIFORNIA $61.21B 12,318,705 24,933 24,933 21.1% KAISER FOUNDATION HEALTH PLAN INC $33.06B 4,690,436 10,127 10,127 11.4% UNITEDHEALTHCARE INSURANCE COMPANY $25.02B 11,638,875 12,925 12,925 8.6% CIGNA HEALTH AND LIFE INSURANCE COMPANY $20.79B 10,906,452 13,348 13,348 7.2% AETNA LIFE INSURANCE COMPANY $19.48B 10,020,002 7,753 7,753 6.7% METROPOLITAN LIFE INSURANCE COMPANY $16.05B 51,051,462 18,155 18,155 5.5% ANTHEM LIFE INSURANCE COMPANY $8.55B 5,139,335 6,050 6,050 2.9% UNITED HEALTHCARE INSURANCE COMPANY $6.38B 2,519,234 2,820 2,820 2.2% UNUM LIFE INSURANCE COMPANY OF AMERICA $5.98B 14,697,652 16,225 16,225 2.1% HARTFORD LIFE AND ACCIDENT $5.90B 19,884,934 7,853 7,853 2.0% DELTA DENTAL OF CALIFORNIA $5.42B 14,190,950 13,680 13,680 1.9% LIFE INSURANCE COMPANY OF NORTH AMERICA $5.32B 25,290,896 11,232 11,232 1.8% PRUDENTIAL INSURANCE COMPANY OF AMERICA $5.18B 17,903,045 3,582 3,582 1.8% THE LINCOLN NATIONAL LIFE INSURANCE COMPANY $5.10B 16,438,271 11,459 11,459 1.8% THE GUARDIAN LIFE INSURANCE COMPANY OF AMERICA $4.07B 6,171,219 17,306 17,306 1.4% CALIFORNIA PHYSICIANS SERVICE $3.05B 442,336 1,080 1,080 1.0% SUN LIFE ASSURANCE COMPANY OF CANADA $2.78B 4,482,361 7,287 7,287 0.96% SECURIAN LIFE INSURANCE COMPANY $2.60B 10,152,815 577 577 0.90% VISION SERVICE PLAN $2.59B 19,324,798 16,262 16,262 0.89% PRIORITY HEALTH $2.15B 436,160 493 493 0.74% UNITED OF OMAHA LIFE INSURANCE COMPANY $2.10B 12,486,061 12,742 12,742 0.72% RELIASTAR LIFE INSURANCE COMPANY $2.09B 6,463,227 2,329 2,329 0.72% STANDARD INSURANCE COMPANY $1.94B 4,942,664 5,203 5,203 0.67% RELIANCE STANDARD LIFE INSURANCE COMPANY $1.76B 7,135,468 5,046 5,046 0.60% COMMUNITY CARE $1.59B 46,024 129 129 0.55%