Medical infrastructure is one of the key factors when choosing a base for long-term living. Koh Samui stands out favourably among Thai resort destinations: the island has several private hospitals at international standard, a network of walk-in clinics and adequate pharmacy coverage throughout.

Main Hospitals

Two large private hospitals serve the island:

Bangkok Hospital Samui — located in Chaweng (northern side), the island's flagship clinic and part of the Bangkok Hospital Group, one of Thailand's largest private medical networks. Services include 24/7 emergency care, surgery, paediatrics, cardiology, neurology, oncology and dentistry. English-speaking staff throughout; Russian interpretation available on request. Accepts most international insurance policies.

Samui International Hospital (New Samui Hospital) — located in Nathon (northwest). More compact but provides emergency care, surgery and outpatient services. Generally more affordable than Bangkok Hospital.

Consultation costs: GP visit at a private hospital ฿400–800. Tests and procedures billed separately. Without insurance, a basic visit with standard tests typically costs ฿1,500–5,000.

Walk-In Clinics

Small private clinics throughout the island are convenient for everyday issues: colds, minor injuries, wound care, injections. Consultation fee ฿200–400. Many operate evening hours, making them accessible outside working hours.

Government health centres are considerably cheaper but operate daytime only and involve waiting times.

Dentistry

Dental care on Samui is well-developed, particularly in Chaweng and Bophut, at prices substantially below European levels:

  • Professional cleaning: ฿800–1,500
  • Filling: ฿500–1,500
  • Implant (complete): ฿25,000–45,000

Many long-term residents specifically plan dental procedures during their Samui stay — quality is comparable to European clinics at a fraction of the cost.

Pharmacies

Pharmacy chains operating on the island include Boots, Fascino and local independents. Staff at larger pharmacies speak English and can help find equivalent medications.

Practical tip for residents: note the active ingredient (INN) of any regular medication rather than the brand name — this reliably finds the local equivalent. Brand names often differ between countries.

Some medications sold by prescription in Europe are available over the counter in Thailand, and vice versa. Antibiotics technically require a prescription but are sold without one at many pharmacies. Controlled substances require a prescription under strict regulation.

Health Insurance

For long-term residents, insurance is essential, not optional.

Extended travel insurance (Allianz, AXA, ERV) with 1–6 month coverage — suitable for seasonal stays. Covers emergency care and medical repatriation; generally does not cover elective or planned treatment.

Local Thai insurance (AIA, Cigna Thailand, BUPA Thailand) — covers both emergency and planned care on the island. For a healthy 30–40 year old: ฿15,000–30,000/year.

International expat insurance (Cigna Global, AXA International, Allianz Care) — the most comprehensive option for permanent expatriates. More expensive ($1,000–3,000+/year) but provides worldwide coverage.

Which to choose: for stays under 6 months — extended travel insurance. For permanent residents — Thai or international expat policy. Those with chronic conditions are strongly advised to have a local Thai policy with Bangkok Hospital access.

Adapting to the Tropical Climate

The first 2–4 weeks on Samui commonly bring mild adaptation symptoms: increased sweating, fatigue and occasional digestive upset. This is normal and typically resolves on its own.

Practical advice:

  • Stay well hydrated — dehydration in tropical heat arrives faster than expected
  • Use DEET-based mosquito repellent, especially at dusk and during rainy season
  • Ensure Hepatitis A and B vaccinations are current before your stay
  • Fever above 38.5°C persisting for more than 2 days warrants a hospital visit — dengue fever is present on the island, though uncommon

Koh Samui is a medically safe destination with good infrastructure. With adequate insurance and a habit of seeking medical attention promptly, long-term living on the island is medically comfortable for the vast majority of residents.