The strike has left public hospitals shut and patients unable to get basic medical care for more than seven weeks.
The strike that began on December 5 has left public hospitals shut and patients unable to get basic medical care for more than seven weeks.
Hellen Wasilwa, a judge at Kenya's Employment and Labour Relations Court, on January 12 gave seven union officials one-month suspended sentences and ordered them to end the strike within two weeks.
But as that ultimatum passed on Thursday she gave the officials another five-day reprieve.
"I hereby suspend the sentence further for five days and this is not for negotiation but for calling off the strike," she said.
The officials are due back in court on January 31.
Doctors have rejected a government offer of a 40 percent rise saying that it fell short of promises made in a 2013 agreement and failed to address other issues such as staff shortages and lack of equipment.
Kenyan university lecturers also went on strike a week ago over pay.
The widespread, disruptive industrial action comes months before an August general election.