He trained at the University of California in San Francisco and the University of Chicago Hospitals. He recently became the director of the division of Allergy and Immunology at Lutheran General Hospital.

He is member of the consulting staff of several other hospitals in the area. Dr. Renold has a special interest in mold detection and prevention as it relates to the treatment of asthma, rhinitis and other immune disorders. He practices a team approach with his patients and their families to learn about the effects of their environment on their health.

Dr Renold and his wife, Liz, have 3 teenage children and live in Northbrook.