As of October 8, 2001

ACCESS 24 - PPO

ADMAR/MEDNET - PPO (Terminated 3/03/00)

AFFILIATED RESEARCH INSTITUTE - EPO

AGRI-BENEFIT SERVICES - PPO (Terminated 10/25/01)

AMERICA=S HEALTH PLAN - PPO

A.S.I. FLEX - PPO

BEECH STREET - PPO

BENEFIT PANEL SERVICES (BPS) - PPO

BLUE CROSS (STANDARD) INDEMNITY

BLUE SHIELD (PPO)

BLUE SHIELD SELECT AND PREFERRED (HMO)

CALIFORNIA CARE (HMO)

CALIFORNIA DEPARTMENT OF CORRECTIONS

CANACINTRA - PPO

CIGNA - HMO

CIGNA - PPO

COMMUNITY CARE NETWORK (CCN) - PPO

COMMUNITY HEALTH GROUP – HMO (EMPLOYER GROUP/COMMERCIAL)

COMMUNITY HEALTH GROUP – HMO (MEDI-CAL)

COMMUNITY HEALTH GROUP – HMO (HEALTHY FAMILIES)

COMP ALLIANCE (See PPO Alliance) - PPO

DIRECT CARE AMERICA - PPO

DRUG ENFORCEMENT ADMINISTRATION

EMPLOYEE HEALTH SYSTEMS MEDICAL GROUP - PPO

ENSENADA CHAMBER OF COMMERCE - PPO

FEDERAL BUREAU OF PRISONS - (See Metropolitan Correctional Center)

FESORMEX - PPO

FOUNDATION HEALTH PLAN (COMMERCIAL) - HMO

FOUNDATION HEALTH PLAN (MEDI-CAL) - HMO

FOUNDATION HEALTH PLAN (SENIOR) - HMO

FOUNDATION HEALTH PLAN TRICARE (HMO) & EXTRA (PPO) CHAMPUS

GRUPO NACIONAL PROVINCIAL - PPO

HEALTH NET - HMO

HEALTH NET - PPO

HEALTH NET SENIORITY PLUS - HMO

HEALTH PAYORS ORGANIZATION - PPO

HMO CALIFORNIA - PPO

INTERPLAN - PPO

KAISER FOUNDATION HOSPITAL - HMO

MANAGED CARE CONSULTANTS - PPO

MANAGED CARE INCORPORATED - PPO

MEDEX HCO - PPO

MEDI-CAL - PPO

MEDICAL CONTROLS, INC - PPO

MEDIPACE - PPO

MERCY PHYSICIANS MEDICAL GROUP

METROPOLITAN CORRECTIONAL CENTER – (Federal Bureau of Prisons)

MEXICALI CHAMBER OF COMMERCE - PPO

MULTIPLAN - PPO

NATIONAL PROVIDER NETWORK, INC - PPO

ONE HEALTH PLAN OF CALIFORNIA - HMO

ONE HEALTH PLAN OF CALIFORNIA - PPO/POS

PACIFICARE (COMMERCIAL) - HMO

PACIFICARE (COMMERCIAL) - PPO & POS

PACIFICARE (SECURE HORIZONS) - HMO

PARK TERRACE MEDICAL ASSOCIATES -

PLANNED PARENTHOOD

PREFERRED HEALTH NETWORK (PHN) - EPO

PREFERRED HEALTH NETWORK (PHN) - PPO

PRIME CARE HEALTH NETWORK - HMO (terminated 8/2/00)

PRINCIPAL HEALTH CARE SYSTEMS - PPO

PRIVATE HEALTH CARE SYSTEMS - PPO

PRUCARE HMO/PRUCARE PLUS - HMO

PRUDENT BUYER - PPO

PRUNET - PPO

ROSARITO CHAMBER OF COMMERCE - PPO

SAN DIEGO HOSPICE – PPO (Terminated 3/15/00)

SAN DIEGO PHYSICIANS MEDICAL GROUP (O/P Only)

SAN DIEGO STATE UNIVERSITY DEPARTMENT OF ATHLETICS (O/P Only)

SAN LUIS RIO COLORADO CHAMBER OF COMMERCE - PPO

SCAN - HMO

SECURE HORIZONS - (PacifiCare Senior)

SOUTHERN HEALTH SERVICES - PPO

SYCUAN ADMINISTRATIVE SERVICES – EPO

TECATE CHAMBER OF COMMERCE - PPO

THE J&S GROUP

TIJUANA CHAMBER OF COMMERCE - PPO

UCSD MEDICAL CENTER

UCSD Health Plan Medi-Cal

UNITED HEALTH CARE/METRA HEALTH - HMO

UNITED PAYORS AND UNITED PROVIDERS - PPO

UNIVERSAL CARE (COMMERCIAL) - HMO

UNIVERSAL CARE (MEDI-CAL) - HMO

UNIVERSAL CARE (HEALTHY FAMILIES) - HMO

U.S.A. HEALTH NETWORK - PPO (Terminated 11/17/01)

U.S. ASSIST - PPO

U.S. CUSTOMS PPO

U.S. FOREST SERVICE - PPO

U.S. MARSHAL SERVICE - PPO

VENCOR HOSPITAL OF SAN DIEGO - PPO

WATCHTOWER - PPO