Işık completed his compulsory service between 2005 and 2007. In 2008, he worked at the Ohio State University Plastic Surgery Clinic in the USA.
Between 2008 and 2013, he started his Plastic, Reconstructive and Aesthetic Surgery studies in Van Yüzüncü Yıl University, Faculty of Medicine. Since 2011, he has been working as the head of the department.
He became Associate Professor in 2012.
Between 2013-2016, he worked in Izmir Katip Çelebi University Faculty of Medicine.
Today he works as a freelance physician.
Associate Professor of Plastic, Reconstructive and Aesthetic Surgery Dağhan IŞIK is also a member of Aesthetic Surgery Association, which is a new branch of medicine in Turkey and the Turkish Medical Association.
He published about 60 international, 20 national articles and many national and international papers.