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ORANGE COUNTY PHYSICIANS IPA MEDICAL GROUP, INC.

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UNITED PHYSICIANS INTERNATIONAL, INC.

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CALIFORNIA PACIFIC PHYSICIANS MEDICAL GROUP, INC.

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ASIAN COMMUNITY MEDICAL GROUP, INC.

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ANGELES IPA, A MEDICAL CORPORATION

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ORANGE COUNTY ADVANTAGE MEDICAL GROUP, INC.

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SOUTHLAND ADVANTAGE MEDICAL GROUP, INC.

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PARAMOUNT IPA INC.

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REGENT MEDICAL GROUP, INC.

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HEALTHSMART MANAGEMENT SERVICES ORGANIZATION, INC.

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NEW LIFE MEDICAL GROUP, INC.

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