Foreigners who come to Turkey for treatment purposes can apply for a short-term residence permit.
During the residence permit application, foreigners are obliged to submit an official letter from the institution where they are treated in Turkey.
Documents Required for Residence Permit Application
(Must show the duration of treatment and must have been signed by head physician and a physician and sealed/stamped)
Notary public approved copy of your rental
agreement , If you are going to rent Flat ,
Notary Public Undertaking of The Host, If you are going to stay with friends
(If the host friends is married, The spouse of host must give Notary public undertaking )
You must attach e-signed/signed and stamped/sealed document which shows that you are staying in dormitory, If you are staying in dormitory
If you are staying at the places like hotel, motel you must attach the documents showing your stay in these places