Why healthcare on Koh Tao is different
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 has had its own multiplace recompression chamber on-island since 2023, at Mae Haad Square, with a 24-hour dive-emergency line (081 081 9777) and dive-medicine physicians behind it — a capability most islands this size simply don't have, and one that used to mean a boat to Koh Samui. For everyday needs, Koh Tao Hospital in Mae Haad (077 456 490) plus private clinics — Ocean Medical Clinic in Mae Haad, Thai Inter Medical Clinic around the clock, Koh Tao Physician in Sairee — 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.
Koh Tao's medical facilities
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 (government) | Public · general · tel 077 456 490 | Mae Haad — just off the 'up road' at the bottom of the hill, a two-minute walk from the ferry piers | The island's only government hospital, and the referral point before any onward transfer. Outpatient hours run roughly 08:00–16:00 daily with a 24-hour emergency medical service on top. On site: a laboratory, an X-ray room, a dental service, antenatal and delivery rooms, family planning, a traditional Thai medicine room and scuba diving medical check-ups. Overnight admissions are possible, and the hospital arranges off-island evacuation by boat or helicopter to Koh Samui, Chumphon or Surat Thani. Cheapest option on the island; bring your passport, as foreigners register at reception before being seen. |
| Ocean Medical Clinic (Koh Tao) | Private · dive medicine & hyperbaric · tel 077 423 801 | 1/53 Moo 2, Mae Haad — opposite Krungsri Bank | Open daily 09:00–24:00, with English-speaking physicians, an X-ray machine, blood testing, two emergency rooms and an observation room. This is the island's dive-medicine anchor: a multiplace hyperbaric chamber treating decompression sickness and dive-related ear injuries, operated by trained chamber staff who stay inside with the patient, and partnered with the SSS Recompression Chamber Network. It also issues pre-dive medical certificates. Part of Ocean Medical Group, which also runs branches on Koh Phangan and at Lamai on Koh Samui. |
| Thai Inter Medical Clinic (TMC) | Private · 24 hours · tel 077 332 511 | 2/80 Moo 2, Koh Tao | Open around the clock with a physician on standby — the usual choice for a scooter accident at 3am. Handles emergency and non-emergency care, blood tests, STD testing and anonymous PrEP, and diving-associated illness, and has staff dedicated to liaising with international insurers. It belongs to the Thai Inter group, whose Koh Samui hospital is one of the standard transfer destinations, so the referral chain is already in place. |
| Koh Tao Physician (Dr Chasit) | Private clinic | Sairee Beach | A long-established Sairee clinic reported to run 24 hours. Named locally, alongside Koh Tao Hospital, as a place to get a scuba diving medical assessment signed off — the certificate most dive schools require before an Open Water course if you tick anything on the medical questionnaire. |
| Recompression chamber & 24-hour dive-emergency line | Specialist · dive emergencies | Mae Haad Square (1/53–54 Moo 2) | Koh Tao has had its own recompression chamber on-island since 2023; before that, every case of the bends meant a boat to Koh Samui first. The 24-hour dive-emergency and evacuation-centre line for the island is 081 081 9777 — save it in your phone before your first dive, not after. Treatment is real but expensive, which is the whole argument for dive insurance below. |
| 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).
What treatment costs
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.
Dive medicine, decompression sickness & DAN insurance
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.
Health insurance & your visa
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:
Scuba divers & dive professionals
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.
Retirement visa (Non-O / O-A)
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.
LTR (Long-Term Resident) visa
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.
DTV (Destination Thailand Visa)
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.
Digital nomads, instructors & long-stay travellers
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 →
Emergencies, evacuation, pharmacies & dental
For non-life-threatening issues, going directly to Koh Tao Hospital or to Thai Inter Medical Clinic — open 24 hours — is usually faster than waiting on an ambulance on a small island. Note that the national 1669 ambulance line is not the only route here: Rescue Koh Tao, a non-profit foundation with a 24-hour land and sea rescue team based behind the Subdistrict Municipality office in Chalok Baan Kao, is frequently the first responder on scene. For dive emergencies, call the island's 24-hour chamber line directly and tell your dive school; the clinics coordinate onward transfer to Koh Samui or Bangkok. Keep these numbers saved before you need them:
| Service | Number |
|---|---|
| Dive emergency / recompression chamber (Koh Tao, 24hr) | 081 081 9777 |
| Rescue Koh Tao — the island's own 24hr land & sea rescue foundation | 087 979 0191 or 1333 |
| Koh Tao Hospital (Mae Haad) | 077 456 490 |
| Ocean Medical Clinic (Mae Haad) | 077 423 801 |
| Thai Inter Medical Clinic (24hr) | 077 332 511 |
| Koh Tao Police Station | 077 456 631 |
| 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.
Koh Tao healthcare questions
Is healthcare good on Koh Tao?
For a small island with no airport, Koh Tao is better covered than you'd expect. Koh Tao Hospital in Mae Haad is the government facility, with a laboratory, X-ray, dentistry, a delivery suite and 24-hour emergency cover; Ocean Medical Clinic and Thai Inter Medical Clinic are the main private options, the latter open 24 hours; and, unusually for an island this size, there is a multiplace hyperbaric chamber on-island. What Koh Tao 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.
What happens if I get decompression sickness (the bends) on Koh Tao?
Since 2023 Koh Tao has had a multiplace recompression chamber on the island itself, at Mae Haad Square, so a suspected case of the bends no longer starts with a boat to Koh Samui. The 24-hour dive-emergency line is 081 081 9777; Ocean Medical Clinic in Mae Haad (077 423 801) runs the chamber in partnership with the SSS Recompression Chamber Network and treats dive-related ear injuries too. Tell your dive operator first — every school on the island is drilled for this — and don't fly or go to altitude until a dive-medicine physician clears you. Treatment works, but it is priced per session and often needs several, which is exactly why dive insurance such as DAN matters so much here.
Do I need dive insurance to dive on Koh Tao?
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.
What's the nearest major hospital to Koh Tao?
Koh Tao Hospital in Mae Haad (077 456 490) 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.
Do I need health insurance to live on Koh Tao?
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.
How much does a doctor visit cost on Koh Tao?
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.
Sources & References
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.
Base near the care you'll actually use.
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.
