Prasert Prasarttong-Osoth

Prasert Prasarttong-Osoth (Thai: ปราเสริฐ ปราสาททองโอสถ, born 22 March 1933) is a Thai billionaire businessman, former surgeon and the founder and owner of Bangkok Dusit Medical Services, Thailand's largest private health care group, and the owner of a regional airline, Bangkok Airways.

Prasert Prasarttong-Osoth
Born (1933-03-22) 22 March 1933 (age 88)[1]
Bangkok, Siam
EducationFaculty of Medicine Siriraj Hospital, Mahidol University
Known forFounder and owner, Bangkok Dusit Medical Services
Owner, Bangkok Airways
Net worthUS$2.4 billion (January 2021)[2]
Spouse(s)Wanli Posayajinda

Early lifeEdit

He received a bachelor's degree from Faculty of Medicine Siriraj Hospital, Mahidol University, after which he qualified as a medical doctor.[3]


He owns Bangkok Dusit Medical Services, Thailand's largest private health care group, and a regional airline, Bangkok Airways.[2] He is president and CEO of Bangkok Dusit, and CEO and vice chairman of Bangkok Airways.[3]

As of August 2018, Forbes estimated his net worth at US$3.5 billion.[2]

In January 2019, the Securities and Exchange Commission of Thailand fined Prasert and his daughter 500 million baht for insider trading of Bangkok Airways shares.[4]

Personal lifeEdit

He is married with five children, and lives in Bangkok, Thailand.[2]


  1. ^ "รวยจริงเขาคือใคร! 10 รู้จัก ปราเสริฐ ปราสาททองโอสถ แชมป์เศรษฐีหุ้นไทย". Retrieved 30 August 2018. CS1 maint: discouraged parameter (link)
  2. ^ a b c d "Forbes profile: Prasert Prasarttong-Osoth". Forbes. Retrieved 12 January 2021. CS1 maint: discouraged parameter (link)
  3. ^ a b "Executive Profile* Prasert Prasarttong-Osoth M.D." bloomberg. Retrieved 25 October 2015. CS1 maint: discouraged parameter (link)
  4. ^ Reuters Staff (February 11, 2019). "Thai tycoon agrees to pay fine for Bangkok Airways share trading: regulator" – via