The standards are generally very good. All foreigners have to pay for medical treatment. There are no reciprocal private health plans available from the UK or the ROI which will be accepted in private hospitals. You can purchase a health insurance plan in Turkey up to the age of 55.
The Turkish health system is being reorganised to create a sickness insurance service that covers all citizens. Doctors and dentists can be found in all of Turkey’s major hospitals. There are also a number of foreign operated hospitals in Istanbul where English is also spoken.