Doctors Without Borders says Washington should "urgently address" the issue even as the Afghan government prepares to rebuild the hospital with millions of dollars donated by the US military.
The organization, known by its French initials MSF, has decided at least for now not to resume operations in Kunduz, where it ran the only trauma hospital in an increasingly violent part of the country, said Guilhem Molinie, the MSF representative for Afghanistan.
President Barack Obama apologized for the attack, which was one of the deadliest assaults on civilians in the 15-year war in Afghanistan.
But while the Pentagon report, released on April 29, said no criminal charges had been leveled against US military personnel for mistakes that resulted in the attack, about 16 American military personnel, including a two-star general, were disciplined.