One of the founders of Polish medicine, he was a medical writer who studied syphilis and hot springs.

In 1565 he left the Polish capitol to study at the Universities of Padua and Bologna, where he earned a doctorate in medicine.

In 1569 Oczko returned to Warsaw and began to practice medicine at St. Martin's Hospital.

At the end of his career, Oczko served as personal physician to Sigismund III Vasa.

The publication date of Cieplic (1578) is symbolically considered to be the foundation of the sanatorium at Iwonicz-Zdrój, whose mineral waters are described in the work.