Thyroid Disease Doctors Worldwide

The doctor is a highly qualified specialist in Endocrinology and Metabolic Diseases, holding a medical degree from Hacettepe University. With extensive clinical training, the doctor completed a specialization in Internal Medicine at Ankara University followed by subspecialty training in Endocrinology and Metabolic Diseases at Ufuk University.

The doctor has achieved significant academic and professional milestones, including an Associate Professorship in 2013 and reaching the rank of Professor in Endocrinology and Metabolic Diseases at Istinye University in 2019. Throughout a distinguished career, the doctor has demonstrated a deep commitment to the field, contributing to both clinical practice and medical education.

Dr. Goksun Ayvaz is a professor trained in internal medicine and in endocrinology and metabolism. He earned his MD from Ankara University Faculty of Medicine in 1983. He completed compulsory service in Nevsehir from 1983 to 1985. He worked at the Department of Internal Medicine at Gazi University in 1985 and in 1994. He completed a residency in the United States in 1990 and subspecialty training in endocrinology and metabolism in the United States in 1996.

He served as an internal medicine specialist in the Internal Medicine and Cardiology units at Ankara Numune Hospital and Ankara Bayindir Medical Center. His academic titles are Assistant Professor (1996–1997), Associate Professor (1997), and Professor (2003). In 1997, he conducted research at the Experimental Medicine Laboratory of the Université libre de Bruxelles with Prof. W. J. Malaisse on pancreatic islet isolation and static incubation.

Medical interests include Graves disease (toxic goiter), Graves orbitopathy, thyroid disease (nodules and thyroid cancer), diabetes mellitus (insulin resistance and latent diabetes), obesity, and gonadal and pituitary diseases.

Performed over 4,500 surgical procedures, including 1,500 as first operator – Dr. Giustacchini leads the Endocrine and Bariatric Surgery Unit at Mater Olbia Hospital.

• Specialized in minimally invasive techniques for thyroid surgery
• Director of the hospital's Bariatric Center
• Teacher at the National School of Endocrine Surgery
• Expert in surgical diseases of endocrine glands

Dr. Susana Monereo Megías is an endocrinologist at Publio Cordón Memorial Hospital in Madrid. She treats metabolic syndrome, type 2 diabetes, and thyroid disease. She manages hormonal health and metabolic disorders at a JCI-accredited facility. The hospital employs more than 110 specialists across various medical fields.

Dr. Jose Atencia Goni is an endocrinologist at Publio Cordon Memorial Hospital in Madrid. He treats type 1 and type 2 diabetes, metabolic syndrome, and thyroid diseases. He also performs medical check-ups for hormonal health.

He practices at a facility accredited by the Joint Commission International. The hospital has over 110 doctors across different specialties and is recognized by the European Society of Human Reproduction and Embryology.

Dr. Aurelio López Guerra is an endocrinologist at Publio Cordón Memorial Hospital in Madrid. He treats thyroid disease, hyperparathyroidism, and type 2 diabetes. Dr. López Guerra manages hormonal care for patients undergoing weight loss surgery and works with obesity management and diagnostic endocrinology. The hospital is accredited by the Joint Commission International and is a member of the European Society of Human Reproduction and Embryology. He works with a team of over 100 specialists at this Spanish medical center.