Organization and administration of health care benefit plans and health care service plans, namely, organizing pre-paid health care plans for others; insurance services, namely, insurance claims administration of health care benefit plans and health care service plans; insurance underwriting in the field of health care; organization and administration of pre-paid health care plans; organization and administration of networks of preferred health care providers, namely, medical insurance case and utilization review and insurance claims adjustment services for healthcare purchasers and payors and providers and Medicare beneficiaries; financial administration of medication reimbursement programs and services