2008
Pulmonary Medicine and Pulmonary Critical Care, Thai Medical Council, Thailand
2004
Internal Medicine, Thai Medical Council, Thailand
2001
Critical Care Medicine, American Board of Internal Medicine (2001-2011), United States
2000
Pulmonary Medicine and Pulmonary Critical Care, American Board of Internal Medicine (2000-2010), United States
2000
Medicine Lung and Heart-Lung Transplantation, Stanford University Medical Center, United States
1999
Pulmonary and Critical Care Medicine, University of Cincinnati Medical Center, United States
1996
Internal Medicine, American Board of Internal Medicine (1996-2006), United States
1996
Internal Medicine, Bronx-Lebanon Hospital Center, Albert Einstein College of Medicine, United States
1988
Doctor of Medicine, Ramathibodi Hospital, Thailand
