Students from the European Union or European Economic Area are entitled to medical services on the basis of the European Health Insurance Card (EHIC). It should be issued by a competent domestic authority before arrival to Poland.
The institution responsible for health care in Poland is the Narodowy Fundusz Zdrowia (NFZ) - the National Health Fund.
To get treatment by a general practitioner (examination and consultation) you should go to a doctor who has a contract with the NFZ and show your European Health Insurance Card (EHIC) or a replacement certificate.
To get treatment by a specialist, such as an obstetrician, dentist, dermatologist, venereologist, oncologist, eye specialist or psychiatrist you do not need a referral. To go to any other specialist you need to go to a general practitioner first. In general we can say, that the standard treatment by a specialist who has a contract with the NFZ is free, but costs of above-standard services and materials have to be covered by the patient.
Detailed information concerning health care in Poland can be found at: http://www.nfz.gov.pl/
In a case of emergency call 999 or 112.