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Billionaire Profile
Prasert Prasarttong-Osoth
Global Rank
#1164

Image: Public domain | via Wikimedia Commons

Prasert Prasarttong-Osoth

CEO, Bangkok Dusit Medical Services PCL
TH
Real-Time Net Worth
$3.5B
As of December 2025
Age
92
Source
Hospitals, airline
Industry
healthcare
Citizenship
TH

Biography

Prasert Prasarttong-Osoth, a Thai billionaire businessman, is the founder and owner of Bangkok Dusit Medical Services (BDMS), Thailand's largest private healthcare group, and Bangkok Airways. With an estimated net worth of $3.5 billion as of 2024, Prasert, a former surgeon, has significantly impacted Thailand's healthcare and aviation sectors. His career began in medicine, earning him a medical degree from Mahidol University. He transitioned into business by co-founding BDMS in 1969, which now operates numerous hospitals and clinics. Prasert's strategic investments and leadership have solidified his position as a prominent figure in Thailand's economy. He is also known for his philanthropic efforts.

Wealth Over Time

In-Depth Profile

Early Life

Prasert Prasarttong-Osoth was born in Bangkok, Thailand, on March 22, 1933. He comes from a family involved in the traditional Thai medicine business. He pursued a medical degree from the Faculty of Medicine, Siriraj Hospital, Mahidol University, and qualified as a medical doctor.

Rise to Success

In 1969, Prasert founded Bangkok Dusit Medical Services (BDMS). BDMS has grown to become the largest private healthcare group in Thailand, with 58 hospitals as of April 2024. In addition to his healthcare ventures, Prasert is also the owner of Bangkok Airways, a regional airline he founded. He took Bangkok Airways public in 2014.

Key Business Strategies

Prasert's success is attributed to his strategic investments in the healthcare and aviation sectors. Under his leadership, BDMS has expanded its network of hospitals and clinics, offering a wide range of medical services. His vision for Bangkok Airways has enabled it to connect Thailand to key destinations. He focuses on delivering high-quality patient care and customer satisfaction.

Philanthropy

Prasert is actively involved in philanthropic activities. He supports various educational and healthcare initiatives aimed at improving social welfare in Thailand.

Career Milestones

1969

Founded Bangkok Dusit Medical Services (BDMS)

Established Thailand's largest private healthcare group

1972

Co-founded Bangkok Dusit Medical Services (BDMS)

Expanded the group into the largest private healthcare provider in Thailand

2014

Took Bangkok Airways Public

Successfully listed the regional airline on the stock exchange

2021

Returned as Director

Returned as a director at both BDMS and Bangkok Airways after a ban

Philanthropy & Social Impact

Healthcare and Education

Healthcare and Educational Initiatives

Undisclosed

Supports various healthcare and educational initiatives to improve social welfare in Thailand

Controversies & Challenges

2019

Insider Trading Fine

Fined 500 million baht by the Securities and Exchange Commission of Thailand for insider trading of Bangkok Airways shares