The information was gathered from a recent Tourism Authority of Thailand (TAT) survey of 22 medical travel agents from the US, Australia, the Middle East and Europe.
The agents said foreigners are still looking for experienced doctors, advanced technologies and high-quality facilities and staff when they come to Thailand.
Medicine is a strong revenue generator among tourism services.
Last year, 2.4 million foreign visitors came to Thailand for health services, generating revenue of B14 billion.
The TAT expects that number to rise to 3 million over the next three years, resulting in doubled revenue.
Deputy Governor Wilaiwan Tawitsri said the TAT plans to promote new advances in plastic surgery, fertility, anti-ageing and cell therapy.
Markets such as Australia, the Middle East, Russia and the US are targets, and the TAT will invite agents from those areas to come and look at services in Thailand.
Ms Wilaiwan said Thailand’s medical tourism ranks top in Asean, especially for skin treatment.
Spending on skin treatment comes to about B50,000 for a two-day trip, while plastic surgery can cost up to B100,000 and needs a longer stay, usually three days.
Ms Wilaiwan said 600,000 high-income Chinese travelled to Switzerland and Singapore last year for anti-ageing and cell treatments, with average expenses of about B2 million a trip for each person.
Chinese customers are a big market this year, as are US and Australian clients seeking plastic surgery and fertility help.
To take advantage of rising demand, the TAT will host the Medical & Wellness Tourism Trade Familiarisation Trip 2013 in August.
Some 50 tourism groups and agents worldwide are expected to join the event in Bangkok.
To understand the needs of upper-class Chinese better, the TAT will host a seminar and workshop on June 25, the main speaker being Pierre Gervois, chief executive of China Elite Focus Ltd.