- 1977-present Acting Chief of Division of Endocrinology and Metabolism, Department of Pediatrics, Faculty of Medicine, Chiangmai University
- 2001-present Asso. Prof. of Pediatrics, Faculty of Medicine, Chiangmai University
- 1983-2001 Assist. Prof. of Pediatrics, Faculty of Medicine, Chiangmai University
- 1977-1983 Clinical Instructor of Pediatrics, Faculty of Medicine, Chiangmai University
- 1993-present Part Time, Pediatric Endocrinologist, Chiangmai Ram Hospital
- 1974-1977 Resident, Department of Pediatrics, Faculty of Medicine, Chiangmai University
- 1973-1974 Rotating Intern, Faculty of Medicine, Chiangmai University