Seeking hospital records for Irel B Reed

My father, Irel B. Reed CSM RA 6984025, is buried at Arlington Sec 76 Grave 355). He told the story of having been wounded by German 88 fire during the battle of the Harlange pocket. He proudly wore the Presidential Unit Citation. He said he was sent back to a hospital. He said they took out the shrapnel, but were going to keep him at the hospital. He said he knew that would mean he would not be able to get back to his unit, 6th Cavalry  Hqs & Hqs Company so he left the hospital, found a fuel truck headed to the front, and got back to his unit. He said his commander who I believe he said was Col. Whiskey Joe Fickett said that he had been reported as AWOL from the hospital. My dad said the Col took care of everything. I am looking for any records that might mention my dad as having been cared for at the hospital or any records that might mention him as AWOL. Does the Surgeon General have the records for the hospitals that cared for the soldiers in the Harlange Pocket? Thank you.