Thailand Is a Medical Tourism Giant. These 10 Countries Send the Most Patients

Thailand’s hospitals do not serve just one type of foreign patient.

Some patients cross the border from Myanmar by road.

Some fly from Cambodia or Bangladesh because they need a heart doctor, a cancer test or surgery they cannot easily get at home.

Others arrive from Qatar, Kuwait and the United Arab Emirates. They may stay for weeks. Their family may come too.

All of them are part of Thailand’s huge medical travel business.

But there is one problem.

No one can say, with full confidence, exactly where every medical tourist comes from.

Thailand does not release a clean, new national table each year. Hospital reports may count visits instead of people. They may also include foreign workers, expats and tourists who became sick during a holiday.

Still, the main patient markets are clear.

Using Thai government reports, hospital data and health industry research, Medical Tourism Watch estimates that these are the 10 countries sending the most patients to Thailand.

Thailand’s Top 10 Medical Tourism Source Countries

This is a best estimate. It is not an official government ranking.

The exact order can change based on what is being counted. One report may count patients. Another may count hospital visits. A third may rank countries by how much money patients spend.

That can produce very different lists.

1. Myanmar

Myanmar is likely Thailand’s biggest foreign patient market by overall volume.

The reason is simple: Thailand is close.

People from Myanmar can travel by road or take a short flight to Bangkok. Many come for tests, surgery and specialist care that can be hard to find at home.

Myanmar has long been one of the most important foreign markets for Thai private hospitals. Thai banking research has also named Myanmar as one of the country’s largest sources of non-Thai patients.

Bumrungrad International Hospital gives us a useful clue. In 2025, Myanmar was its second-largest foreign market by revenue, behind Qatar.

That is a big deal.

Myanmar is not just sending many patients. Some of those patients are also buying costly hospital care.

2. Cambodia

Cambodia may be Thailand’s clearest cross-border medical tourism story.

Patients can reach Bangkok by air. Others enter eastern Thailand by road.

They come for health checks, cancer care, heart treatment, maternity services and surgery.

The Thai government has named Cambodia as one of the five biggest countries sending people to Thailand for medical treatment.

Thai hospitals do not wait for these patients to find them.

Bumrungrad has built referral offices in Phnom Penh. It also works with local partners that help patients make appointments and plan their trips.

That tells us something important.

The Cambodia-to-Thailand patient route is not random. It is a real business system.

3. China

China is one of Thailand’s biggest prizes.

Chinese patients do not all come for the same thing.

Some come for fertility care. Some want health checks, rehab or wellness services. Others look for cosmetic treatments, dental care or specialist doctors.

Thailand has spent years trying to win more of this market.

Thai hospital groups have even opened fertility centers aimed at Chinese patients.

The Thai government has also listed China among its five biggest medical treatment markets.

China may move up or down from year to year. Flight prices, the Chinese economy and safety fears can all change travel demand.

But its size makes it too important for Thailand to ignore.

4. Kuwait

For years, Kuwait was one of the biggest names in Thai medical tourism.

Many Kuwaiti patients did not pay fully out of pocket. They came through state-backed treatment plans.

That made Kuwait a very rich market for Bangkok hospitals.

The Thai government once placed Kuwait first on its list of countries sending patients to Thailand.

But this market comes with risk.

When a government changes its rules, referrals can drop fast. Thai hospital research has warned that changes in Middle Eastern referral plans can hurt hospital income.

Kuwait may no longer hold the power it once did. But it is still one of Thailand’s most important medical travel markets.

5. Qatar

Qatar is small. Its value to Thai hospitals is not.

Qatari patients often need complex care. This can mean large bills, long stays and treatment from more than one doctor.

Bumrungrad said Qatar was its biggest foreign market by revenue in 2025.

The market has kept growing.

In the first quarter of 2026, Bumrungrad’s revenue from Qatari patients rose by almost 29 percent from the same period a year earlier, according to a DBS research report.

This is why Qatar can rank below Myanmar or Cambodia in patient numbers but beat them in money spent.

One Qatari case may be worth far more than several short health-check visits.

6. United Arab Emirates

The UAE is another high-value market.

Patients may travel for cancer care, brain and nerve treatment, joint surgery, heart care and hard-to-diagnose health problems.

Many also expect more than a doctor.

They want airport pickup, help with visas, Arabic-speaking staff, private rooms and support for family members.

Thai hospitals have built services around these needs.

Bumrungrad reported strong growth from the UAE during 2025. Revenue from Emirati patients rose 46 percent from the previous quarter in early 2025.

In early 2026, UAE patient revenue was still rising.

The UAE may not send Thailand the largest number of people. But it sends the kind of cases private hospitals want.

7. Bangladesh

Bangladesh may be Thailand’s biggest new chance.

For years, India was the natural choice for many Bangladeshi patients.

It was close. It was cheaper than Western care. Many doctors and hospital workers spoke Bengali.

Then politics got in the way.

India cut the number of medical visas it gave to Bangladeshi patients after ties between the two countries became worse. Some patients began looking at Thailand and China instead.

Thai hospitals were ready.

Bumrungrad has several referral offices in Bangladesh. These offices help patients in Dhaka and Chattogram plan care in Bangkok.

Bumrungrad also reported strong growth from Bangladesh in 2025 and early 2026.

Bangladesh could move much higher on this list.

8. Japan

Japan looks strange on this list.

Why would patients from a rich country with a strong health system travel to Thailand?

Some do come for planned care, health checks, dental work and wellness services.

But there is another reason Japan ranks highly in some Thai reports.

Many Japanese people live and work in Thailand.

When they use a Thai hospital, they may be counted as foreign patients even though they did not fly into the country for treatment.

This is one of the biggest problems with medical tourism data.

Still, Japan has appeared on the Thai government’s official list of top five foreign treatment markets.

It belongs in the top 10, but not every Japanese patient should be called a medical tourist.

9. Oman

Oman has sent patients to Thailand for many years.

Like Qatar and the UAE, it is a smaller country that can produce high-value cases.

Patients come for cancer treatment, joint care, rehab, fertility treatment and major surgery.

Thailand’s government named Oman, Qatar and Kuwait as key medical source markets in a March 2026 report.

Bumrungrad also saw revenue from Oman rise by 28 percent from one quarter to the next in early 2025.

Oman does not get the same attention as Qatar.

It should.

10. Laos

Laos is the quiet market on this list.

It does not bring the same money as Qatar or Kuwait. It does not have the size of China.

But it is right next door.

Patients from Laos travel to Thailand for tests, surgery and specialist care. For families near the border, a Thai hospital may be easier to reach than a major hospital in their own country.

Thai health research has long placed Laos among the main sources of foreign patients. Hospitals have also invested in Laos and built referral links between the two countries.

Laos is not a flashy market.

It is a steady one.

Thailand Is Really Serving Two Markets

Thailand’s medical tourism story is often sold as one big global success.

It is more useful to see it as two businesses.

The first is the neighborhood business.

Myanmar, Cambodia and Laos send patients because Thailand is close. China and Bangladesh add far larger pools of possible patients.

These people often want better access. They want a trusted doctor. They want care they may not be able to get at home.

The second is the Gulf business.

Qatar, Kuwait, the UAE and Oman send fewer people. But their patients may spend far more.

They may need hard surgery, long hospital stays or months of care. Some travel with a state payment promise. Others are rich private patients.

Thailand needs both groups.

Asian patients bring volume.

Gulf patients bring value.

The Numbers Can Fool You

Thailand is often said to receive millions of medical tourists each year.

That may be true only under a very wide meaning of the term.

Some reports count every foreign hospital visit. That can include expats, workers and people who became sick while already in Thailand.

It can also count the same person many times.

A cancer patient who visits a hospital 12 times may be counted as 12 medical visits, not one medical tourist.

A U.S. government health market report said Thailand received 3.5 million medical travelers in 2019, based on IQVIA data. It also noted that Thai hospitals have large international departments with staff who speak many languages.

Those numbers show the size of the business.

They do not give us a perfect count of people who boarded a plane mainly to see a doctor.

What Thailand’s Patient Map Tells Us

Thailand did not become a medical tourism leader by selling cheap surgery to everyone.

It built patient routes.

Myanmar patients know where to call.

Cambodian families can speak to a referral office in Phnom Penh.

Bangladeshi patients can begin their hospital journey in Dhaka.

Arabic-speaking teams help Gulf patients through long and difficult treatment.

That is the real lesson.

Medical tourism is not just about having good doctors.

It is about making a sick person feel that the trip will be safe, simple and worth the risk.

Thailand has spent years building that trust.

Its rivals are now trying to do the same.