Since 1959, TSG has been appointed in the grade of lieutenant general. By law, TSG may be appointed from any of the six officer branches of the AMEDD. However, prior to the 43rd Surgeon General, Lt. Gen. Patricia Horoho — an Army Nurse Corps officer — all appointed and confirmed surgeons general have been Medical Corps officers — military physicians. The incumbent Surgeon General is medical administrator Lieutenant General R. Scott Dingle, a Medical Service Corps officer. The 44th Army Surgeon LTG Nadja West retired on July 19, 2019.