Endocrinology, Diabetes & Metabolism, Internal Medicine • 5 Providers. 635 N Maitland Ave, Maitland FL, 32751. Make an Appointment. (407) 629-4901. Telehealth services available. Central FL Endocrine/Diabetes is a medical group practice located in Maitland, FL that specializes in Endocrinology, Diabetes & Metabolism and Internal Medicine..