Medical Treatment Visa (Non-MT) — Medical Care in Thailand in Koh Samui

OPD THB 1,200-2,400 · private room THB 5,000-10,000/night · on par with Phuket. National benchmark: Visa fee THB 2K + Immigration extension 1.9K + treatment per estimate.

Top picks: Chaweng (tourist, sea-view), Bophut-Fisherman's Village (digital nomads), Lamai (families), Maenam (quiet).

Standard timeline Visa 5–10 days at embassy · Immigration extension same day. Koh Samui is similar — NYC can pre-book to complete in a single day.

500 Mbps-1 Gbps fiber THB 790-1,290 · 5G in Chaweng-Bophut. Transit: Cars/motorbikes — no Grab/Bolt on the island (local taxis are expensive), motorbike rentals THB 2,500-3,500/month.

Tropical — rain Oct-Dec (NE monsoon), high season Jan-Sep

Accompanying persons are allowed under the Non-Immigrant MT category. A spouse, parent, child or sibling may apply as the patient's companion, and the number of companions granted is set by the embassy or Immigration office handling the case. You must show proof of the family relationship, legalised or apostilled and translated, together with the hospital letter naming the companion.

Unlimited as long as you show ongoing medical need + receipts + updated hospital letter / cancer/dialysis cases run 5+ years.

In-country conversion from a Tourist visa or exemption stamp to Non-Immigrant MT is generally possible at Immigration, provided enough permitted stay remains. You submit a letter from a hospital licensed for medical treatment stating the diagnosis and expected treatment period, payment receipts or a deposit confirmation, and the standard change-of-visa fee. Processing commonly takes two to three weeks.