Koh Tao's healthcare is built around its identity as a dive island: a public hospital and private clinics for everyday care, plus hyperbaric recompression facilities most islands its size simply don't have. Here's the relocation view — where to go, what it costs, and how insurance (including dive insurance) works. Figures are 2026 guide ranges (≈ THB 35–36 = USD 1).
Koh Tao has no airport and no full private international hospital — on paper, thinner cover than Phuket, Koh Samui or Bangkok. In practice, the island punches above its weight in one specific way: because it is one of the world's busiest places to learn to dive, it also supports dedicated hyperbaric recompression facilities and dive-medicine expertise built to treat decompression sickness, a capability most islands this size simply don't have. For everyday needs, Koh Tao Hospital in Mae Haad and a scattering of private clinics across Mae Haad, Sairee and Chalok Baan Kao cover routine illness and minor injury. Anything more serious means a speedboat or ferry transfer to Koh Samui, and from there, if needed, on to Bangkok. For live rent by area, use the BAANLYY Koh Tao hub.
Routine care stays on-island; anything beyond it escalates off-island in stages, first to Koh Samui and then, if needed, to Bangkok.
| Facility | Type | Area | Known for |
|---|---|---|---|
| Koh Tao Hospital | Public · general | Mae Haad | The island's only government hospital. Handles routine illness, minor injuries, basic stabilization and initial assessment of dive-related emergencies, and is the referral point before any onward transfer to Koh Samui or the mainland. Lowest cost, less English than the private clinics. |
| Private walk-in clinics | Private clinics | Mae Haad, Sairee Beach, Chalok Baan Kao | A number of English-speaking private clinics across the main villages handle everyday illness, minor cuts and infections, travel and dive medical certificates, prescriptions and vaccinations quickly, without the wait of the public hospital. |
| Hyperbaric / dive-medicine centres | Private · specialist | Mae Haad / Sairee Beach | Given Koh Tao's status as one of the world's busiest dive-training hubs, the island supports dedicated hyperbaric recompression facilities and dive-medicine physicians for treating decompression sickness (DCS) and arterial gas embolism — a genuinely unusual asset for an island this size, and one most Thai islands don't have. |
| Koh Samui hospitals (off-island) | Private · international (transfer) | Koh Samui, ~1–2 hrs by speedboat/ferry | Anything beyond routine care, or a dive injury needing more than local stabilization, is typically transferred by speedboat or ferry to Koh Samui's private international hospitals (Bangkok Hospital Samui, Thai International/Bandon, Samui International) or the public Koh Samui Hospital. |
| Bangkok hospitals (off-island) | Private · international (transfer) | Bangkok, by onward flight/transfer from Samui | Complex, specialist or severe cases are transferred onward from Koh Samui to Bangkok's leading private hospitals — the standard escalation path for anything the island and Samui cannot fully manage. |
Read the full profiles: Koh Tao Hospital (the government hospital in Mae Haad) and Ocean Medical Clinic (private, diving medicine & hyperbaric chamber).
Everyday care on Koh Tao is inexpensive by Western standards. The number that catches long-stayers off guard is hyperbaric treatment — effective, genuinely valuable to have on the island, but priced per session and often needing more than one. Guide ranges in THB:
| Service | Typical cost |
|---|---|
| Private clinic GP / outpatient consultation | THB 700–1,500 |
| Public hospital outpatient visit (Koh Tao Hospital) | THB 200–800 |
| Dive medical certificate / fitness-to-dive check | THB 1,000–2,500 |
| Minor wound care / stitches (private clinic) | THB 1,500–4,000 |
| Hyperbaric oxygen therapy, per session (DCS treatment) | THB 15,000–40,000+ |
| Speedboat/ferry medical transfer to Koh Samui | THB 2,000–8,000 (higher if chartered/urgent) |
| Koh Samui private-hospital A&E visit (minor) | THB 2,000–6,000 |
Costs vary by clinic, facility and case complexity; always confirm a quote directly, and check exactly what your insurance covers before you need it, not after.
This is the section that makes Koh Tao's healthcare page different from every other Thai island's. With one of the highest densities of dive schools anywhere in the world, Koh Tao built the medical infrastructure to match: hyperbaric recompression chambers and dive-medicine physicians able to treat decompression sickness (DCS) and arterial gas embolism on-island. It's a real safety net, but not a free one — hyperbaric oxygen therapy is billed per session and serious cases can need several. Most dive schools require or strongly recommend dive-specific insurance such as DAN (Divers Alert Network) for exactly this reason: it is built around the treatment and evacuation costs standard travel or health insurance often doesn't fully cover. If you plan to dive regularly, or work as an instructor or divemaster, treat dive insurance as a fixed cost of living here, not an optional extra.
Insurance rules differ by visa, and requirements change — confirm the current rule for your visa before you apply or extend. On a small island where a serious case means a paid transfer off-island, comprehensive cover is worth having regardless of what your visa strictly requires. As a planning guide:
Dive-specific insurance such as DAN (Divers Alert Network) is close to essential here, not optional — it is built around exactly the risk Koh Tao's dive economy creates: decompression sickness treatment, hyperbaric chamber sessions and medical evacuation, which can run into hundreds of thousands of baht without cover.
The O-A in particular has historically required health insurance with set minimum cover; budget for a comprehensive expat policy and keep proof current at extension time.
Requires health insurance or a proof-of-funds/self-insurance threshold; a policy covering at least the stated minimum, or the equivalent deposit, is part of qualifying.
No mandatory insurance line in the core requirements, but travel/health cover is strongly advised — on a small island where serious cases mean a paid transfer to Koh Samui or Bangkok, going without insurance is a real financial risk.
International private medical insurance (IPMI) or a solid travel-medical policy that explicitly includes medical evacuation — and dive insurance on top if you're diving regularly, which most long-stay residents on Koh Tao are.
Full Koh Tao health insurance guide → · See BAANLYY visa guides →
For non-life-threatening issues, going directly to Koh Tao Hospital or a private clinic in Mae Haad or Sairee is usually faster than waiting on an ambulance on a small island. For dive emergencies, dive schools and hyperbaric facilities coordinate directly with each other and, when needed, with Koh Samui and Bangkok for onward transfer. Keep these numbers saved:
| Service | Number |
|---|---|
| National emergency medical / ambulance | 1669 |
| Police | 191 |
| Tourist Police (English) | 1155 |
| Fire | 199 |
Pharmacies. Pharmacies in Mae Haad and Sairee stock everyday medicines and many items that need a prescription in the West are available over the counter; stock can be thinner than on larger islands, so plan ahead for regular prescriptions. Dental. A handful of private dental clinics handle routine and cosmetic work at Thailand-typical prices; more complex dental work is often better scheduled on a trip to Koh Samui or Bangkok where choice is wider.
For a small island with no airport, Koh Tao is better covered than you'd expect — a public hospital, several private walk-in clinics, and, unusually, dedicated hyperbaric and dive-medicine facilities built around the island's dive economy. What it doesn't have is a full private international hospital: anything beyond routine care or initial dive-injury stabilization means a speedboat or ferry transfer to Koh Samui, and from there on to Bangkok for complex cases.
Koh Tao's dive-medicine and hyperbaric recompression facilities exist specifically to treat decompression sickness (DCS) and arterial gas embolism on-island, without an immediate transfer — a genuinely unusual capability for an island this size. Treatment typically involves one or more hyperbaric oxygen therapy sessions, which are effective but not cheap, which is exactly why dive insurance such as DAN matters so much here.
Not legally required, but strongly recommended and treated as close to essential by most dive schools and long-stay divers. DAN (Divers Alert Network) and similar dive-specific policies cover decompression sickness treatment, hyperbaric chamber sessions and medical evacuation — costs that standard travel or health insurance often excludes or caps well below what real treatment costs.
Koh Tao Hospital in Mae Haad handles routine care and initial stabilization, but the nearest full private international hospitals are on Koh Samui — Bangkok Hospital Samui, Thai International (Bandon) and Samui International — reached by speedboat or ferry, typically one to two hours depending on conditions and transfer type. Complex or specialist cases continue on from Samui to Bangkok.
It depends on your visa and how much diving you do. The retirement O-A and the LTR visa carry specific insurance or proof-of-funds requirements; the DTV does not mandate it but strongly rewards having it, given that any serious case means a paid off-island transfer. If you dive regularly — which most long-stayers on Koh Tao do — add dedicated dive insurance (DAN) on top of general health cover.
A private clinic consultation runs roughly THB 700–1,500, and the public Koh Tao Hospital is cheaper still at about THB 200–800, though with less English and longer waits. The costs that catch people out are dive-specific: a hyperbaric oxygen therapy session for decompression sickness can run THB 15,000–40,000 or more, often needing several sessions — which is the real argument for carrying dive insurance.
Planning a move? Pair this with the Koh Tao cost-of-living guide and our relocation guides.
Primary and official sources are cited above. Government rules, fees and procedures in Thailand change over time and vary by office; always confirm current requirements with the relevant authority before relying on them. BAANLYY never takes paid placement in editorial content.
Mae Haad and Sairee put you closest to Koh Tao Hospital, the private clinics and the dive-medicine facilities. Match your area to your priorities.
General information only, not medical, legal, immigration, tax or financial advice. Hospital and clinic services, costs and visa insurance rules change — confirm current details with the facility, a licensed insurer or official sources.
Hero photo by Hossam Ashoor on Pexels.