Mustafa K. Hacımustafaoğlu graduated from Gaziantep High School in 1976. He graduated from Hacettepe Faculty of Medicine in 1982 as a Medical Doctor. He did his compulsory service before specialization in Edirne province Kurtbey Village. After his compulsory service, he started his Pediatrics Specialization in 1985 and received his specialization in Pediatrics from Istanbul Faculty of Medicine in 1989. After completing his compulsory service after his specialization, he started to work as a specialist in Uludağ University Faculty of Medicine, Department of Child Health and Diseases. In 1994, he received his specialization in Pediatric Infectious Diseases. He became an assistant professor in 1993, associate professor in 1995, and professor in 2000. He is currently working as a faculty member in Uludağ University Faculty of Medicine, Division of Pediatric Infectious Diseases.