Tengri Medikter or Heavenly Medics are a group officially defined as medics, doctors and nurses under the direct rule of The Khan of Khazar Lechia who are financed similarily to the army. Whenever they are not ordered to a specific place, they work normally in the hospitals. The best educated people in the nation are still within that group since their education is payed for directly by the Khan just like the military's.
"Send The Medics with Mark of Tengri!" Is a known and legendary sentence used many times in the history of Khazar Lechia in a lot of situations. The start of the group itself is unknown, but the first mention of it is at the first known ride of the united Khazar Lechia onto one of ancient cities. When the city was sacked one of the advisors mentioned to the Khan "A lot of fire... A lot of people died" and Khan was supposed to answer "Send The Medics with Mark of Tengri (Heaven)".
Back in the pagan days those Heavenly Medics were the only recorded scholars that have known enough western and arabic knowledge to manage a medical institution known as a "Shpital". After the religion of the Khan changed to abrahamic, he decided to keep them as a group without restructuring them or even changing their name.
For many years they have been left to their own lives, until the leader of Thialrer asked Khazar Lechia to take a stance on their internal war. Khan not wanting to send his fragile army and not wanting to risk a conflict with other nation of the region decided to once again after so many years "Send The Medics with Mark of Tengri".