Dr. Mario L Perez specializes in infectious disease in Fontana area. Dr. Mario L Perez has a medical practice at 9958 Sierra Ave., Fontana CA, and has over 14 years of experience in the field of medicine. He graduated from his medical school with his medical degree in 2003. Dr. Perez is accepting new patients at his medical office and practice location in Fontana, California. He is available for appointments, preventative care, medical care as well as ongoing patient care.