Twenty-two other MSF staff who were missing have now been accounted for after the organisation was able to make contact with them, a spokeswoman told AFP.
Nine patients remain missing after the October 3 strike as MSF continues to try and trace their whereabouts, she said.
MSF added that an international fact-finding commission it had called on to probe the strike, which prompted global revulsion, had sent letters to the US and Afghan governments seeking their agreement for it to launch an investigation.
"We need to understand what happened and why."
The Pentagon announced on the weekend it would make compensation payments for those killed and injured in the attack, which caused MSF to close the hospital's trauma centre, seen as a lifeline in a war-battered region with scant medical care.
