While serving as Attending Physician to the Congress, a Reserve holds the reserve grade of major general or rear admiral, as appropriate.
Structure US Code
Subtitle E— Reserve Components
CHAPTER 1205— APPOINTMENT OF RESERVE OFFICERS
§ 12201. Reserve officers: qualifications for appointment
§ 12202. Commissioned officer grades
§ 12203. Commissioned officers: appointment, how made; term
§ 12204. Commissioned officers: original appointment; limitation
§ 12205. Commissioned officers: appointment; educational requirement
§ 12206. Commissioned officers: appointment of former commissioned officers
§ 12207. Commissioned officers: service credit upon original appointment
§ 12208. Officers: appointment upon transfer
§ 12209. Officer candidates: enlisted Reserves
§ 12210. Attending Physician to the Congress: reserve grade
§ 12211. Officers: Army National Guard of the United States
§ 12212. Officers: Air National Guard of the United States
§ 12213. Officers; Army Reserve: transfer from Army National Guard of the United States
§ 12214. Officers; Air Force Reserve: transfer from Air National Guard of the United States
§ 12215. Commissioned officers: reserve grade of adjutants general and assistant adjutants general