Dr. Yassen completed the Iraqi Board of Plastic and Reconstructive Surgery (2011–2016) with clinical training at Al-Wasity Hospital for Plastic Surgery and Al-Shaheed Ghazi Al-Hariri Hospital. Former faculty member at Al-Mustansiriyah College of Medicine, and currently runs his private aesthetic clinic in Baghdad (since 2016). He is certified trainer for Galderma, and an active participant in major international aesthetic and surgical congresses, including: IMCAS, Dubai Derma, Sharm Derma, EADV, ISAPS, GAIN, and MD Codes.