- 3 years Pediatrician at St. Louis University, St. Louis, USA.
- 3 years Pediatrician + Pediatric Cardiologist at Kansas University, Kansas, USA.
- 20 years General Pediatrician + Pediatric Cardiologist at Chiangmai University Hospital, Thailand
- Last Title Associate Professor at Chiangmai University
- Present General Pediatrician + Pediatric Cardiologist at Chiangmai Ram Hospital