Dr. Bayan Mesmar practices Endocrinology in TAMPA, FL. Dr. Mesmar specializes in preventing, diagnosing, and treating diseases related to hormone imbalance, and the bodys glands in the endocrine system. Endocrinologists are trained and certified to treat a variety of conditions, including menopause, diabetes, infertility, and thyroid disorders, among many others. Dr. Mesmar examines patients, determines means of testing, diagnoses, and decides the best treatment methods.