Medical provider reimbursement review and preferred provider organization (PPO) cost management services for workers' compensation, auto liability and group health insurance coverages; in network and out of network medical bill audit service for all types of medical bills to fee schedule, usual and customary and PPO discounts; hospital inpatient and outpatient automated bill review and cost containment services; medical, therapy, medical facility and hospital bill auditing; computerized medical review services, namely, identifying medical claims needing medical cost management or review for over utilization of medical services; retrospective utilization review services for all medical bills; case by case fee negotiation services in the healthcare field; professional review services for the assessment of medical bills and healthcare costs; medical and therapy cost containment services; hospital inpatient and outpatient automated bill review