• American Rehabilitation, Inc. (ARI) Offers medical and vocational rehabilitation, telephonic claims reporting, telephonic case management, and medical networks.

• American Specialty Health Plans of California [USA, California] Offers health plans for chiropractic care and acupuncture. Site describes the company and includes directory of participating care providers.

• AmeriChoice Corporation [USA] Organizes health care benefits and services for beneficiaries of Medicaid and other government-sponsored health care programs in more than one dozen markets nationwide.

• Amerigroup Corporation [USA] Provider of health care to low-income and uninsured families in several states and the District of Columbia. [English, some content in Spanish]

• British Union Provident Association (BUPA) [International] Provider of health insurance plans and services in several nations.

• Choice One, Inc. [USA, North Carolina] Offers ongoing review and negotiation of managed care agreements for physicians with HMOs, PPOs, and POS programs. Has assisted in establishing several independent practice associations (IPAs).

• College Health IPA [USA, California] A behavioral healthcare delivery system serving approximately 1.1 million members.

• Concentra, Inc. [USA] Provides occupational health services for cost containment and lost time prevention including: drug screens, physical therapy, first notice of injury, and case management.

• CorVel Corporation [USA] A national, independent provider of managed care and case management services for workers' compensation, accident and health, and auto insurance markets.

• County Managed Care Resource (COMCARE) [USA, Pennsylvania] A program of the County Commissioners Association, which provides services and assistance to the counties implementing behavioral managed healthcare within the state HealthChoices program.

• Coventry Health Care, Inc. [USA] A managed health care organization which offers HMOs and PPOs in many states. Site provides links to subsidiary organizations, offers investor information, and a company overview.

• Definity Health, Inc. [USA] A provider of consumer-driven health plans, consisting of an employer-funded personal care account, a traditional health coverage component, and an array of tools and resources to support its members.

• First Health Group Corporation [USA] Serves the group health, workers' compensation, and state public program markets in addition to offering claims services and clinical management. Site describes the company, its services, and offers consumer information.

• GatesMcDonald HealthPlus [USA, Ohio] A managed care program providing medical care via workers' compensation for injured workers. Site describes company, its services, and allows provider lookup.

• Harvard Pilgrim Health Care [USA] Nonprofit organization offers HMO, PPO, and POS plans in New England. Includes benefits, coverage, financial and employment information, and health news.

• Health Plan of Nevada [USA, Nevada] Offers HMO, Medicare HMO, PPO, and POS plans. Site includes information about plan options and benefits and a glossary. A subsidiary of Sierra Health Services, Inc.

• Health Risk Management, Inc. Provides integrated health care management and information services to manage the quality volume and cost of health care under employee benefit plans. (Nasdaq: HRMI).

• Healthcare Recoveries, Inc. Provides health insurance subrogation and related recovery services for private healthcare payors. (Nasdaq: HCRI).

• HealthExtras, Inc. Provides supplemental health and disability benefit programs directly to consumers over the Internet. (Nasdaq: HLEX).

• HealthHelp [USA] Provides radiology management services for insurers and physicians. Its national radiology network is used by many managed care organizations.