Disease Prevention and Health Promotion have been around for quite some time. Preventive*PLUS works around the clock to keep your most valuable asset--your employees-- healthy and productive. Improving People's Health through Disease Prevention, Health Evaluations, and Clinically Integrated Programs. Preventive*PLUS was established in 1987 by Jeffrey S. Liva, M.D., M.P.H., MS, to develop and implement preventive health programs for corporations, labor organizations, and individuals. Our Corporation has become a leader in the field of disease prevention and health promotion, and is recognized for its high standards and comprehensive approach to health care. Dr. Liva is Board Certified in Preventive Medicine and Occupational Medicine. Dr. Liva graduated with a B.S. from the University of Michigan and received his M.D. from the University of Miami. He received his M.P.H., in Health Policy and Administration / Public Health from Columbia University and his M.S., in Industrial Health from the University of Michigan.