Dr. Custodio is a specialist in endocrinology and treats patients with diabetes and thyroid and parathyroid conditions. He received his medical degree from the University of Philippines Manila College of Medicine and completed his residency at Akron General Medical Center, Akron, Ohio. He gained additional training in endocrinology during a fellowship at the AHN Medical Education Consortium. He is certified by the American Board of Internal Medicine for Endocrinology. He speaks English and Filipino.