From 1997 to 2004 he worked at the Rosenparkklinik Darmstadt, a private clinic specializing in Aesthetic Dermatologic Surgery.
The Frankfurt practice is focusing exclusively on injectables and liposuction surgery in Frankfurt, Germany. He also serves as a member of the University of Darmstadt.
Dr. Sommer has edited several books including Botulinum Toxin in Aesthetic Medicine and Tumescent Local Anaesthesia, both published in German and English. He has been the author or co-author of many clinical research papers and has made numerous congress presentations.
In 2005, the first German book on BOTOX® and fillers for laymen (“Botox & Co.") has been well appreciated by the public.
Dr. Sommer has been a member of the ISDS since 1997 and part of the Board of Directors. He is also a Member of the German Society for Aesthetic Surgery, the Association of Surgical Dermatology, the Professional Association of German Dermatologists, and the European Society for Cosmetic and Aesthetic Dermatology.
Dr. Sommer serves regularly as a teacher for botulinum courses and is co-founder and president of the German Society of Aesthetic Botulinum Toxin Therapy (DGBT)