Sala was  appointed as a personal physician of Count Anton Günther of Oldenburg who also appointed Sala as supervisor of the pharmacy system in the state of Oldenburg. In 1620 Sala went to Hamburg as a medical chemist. In June of that year, he became a personal physician of Count Ernst von Holstein-Schaumburg. In 1622, Maurice, Landgrave of Hesse-Kassel called him to Kassel and may also have recommended Sala to his son-in-law, Duke John Albert II, Duke of Mecklenburg, to whom Sala has served as a personal physician from about 1623. In any case, he installed Sala in Güstrow in 1625 to live and work in the castle.
At the end of May 1628, Sala accompanied Duke Johann Albrecht II, expelled by Wallenstein, into exile in Bernburg in Anhalt. On 26 June 1628 FürstLudwig I of Anhalt-Köthen admitted by him to the Fruchtbringende Gesellschaft at the same time as Johann Albrecht II and Otto von Preen. The prince gave Sala the title "der Lindernde" ("the soothing") and the motto "die Schmerzen“ ("pain"). Sala took the chamomile blossom as his emblem. Salas entry can be found at #160 in the Köthener Gesellschaftsbuch'.
In the summer of 1629, Sala accompanied his duke into exile in Lübeck. There he remained as a personal physician until the death of the Duke in 1636, then served his  son, Duke Gustav Adolf of Mecklenburg-Güstrow, in the same position.