The Kids Next Door Surgery Medical Center, or Kids Next Door Surgical Center, was a KND medical research base in the tundra of Northern Russia. It's location was hidden due to it having such advanced medical equipment. Only the base personnel and high ranking operatives are allowed to know about it. Even operatives treated here were brainwashed to think that they were patients at Sector HH after they were healed. After the head surgeon of Sector HH, Numbuh V05, betrayed the KND, her talented assistant, Numbuh 90/40 was given the position of head surgeon here. This sector was also serveed as the prison hospital.