Endocrinology; Diabetes Care; Thyroid Care; Patient Resources; Insurance & Pricing; ... Skip to content. Advanced Institute for Diabetes & Endocrinology. CLICK HERE TO LEARN HOW WE ARE KEEPING PATIENTS SAFE DURING THE COVID-19 PANDEMIC. 1900 Matlock Rd, Ste 304 Mansfield, TX 76063 ... Patient Portal. 1900 Matlock Rd, Ste 304 Mansfield, TX 76063 ....