Dr. Fernando A. Montelongo is a family medicine doctor in Orange, California and is affiliated with Providence St. Joseph Hospital-Orange. He received his medical degree from University of California, Irvine, School of Medicine and has been in practice for more than 20 years. Dr. Fernando A. Montelongo has expertise in treating shingles, anxiety disorders, diabetes, among other conditions - see all areas of expertise. Dr. Fernando A. Montelongo accepts Medicare, Aetna, Humana, Blue Cross, United Healthcare - see other insurance plans accepted.