Translation:The doctor dealt with many patients.
My understanding of the Wiktionary definitions,
"kuraci" means to treat in a medical sense. (https://en.wiktionary.org/wiki/kuraci)
And "trakti" refers to treatment in a general sense, (So-and-so treated him/her well/poorly) with treating a patient as a secondary meaning. (https://en.wiktionary.org/wiki/trakti)