Chief Physician of the Obesity and Metabolic Surgery Department at Sana Clinic, Benrath, Dr. med. Thomas Sonnenberg is a leading expert with over 25 years of experience in bariatric surgery. Over the course of his career, he has successfully performed more than 7,000 operations.

He is a specialist in general and visceral surgery, with a focus on complex visceral surgery and proctology. In addition, he holds a qualification in nutritional medicine (DGEM/DAEM).