Glad to help. Of course this list only represents assignments; I have not studied records showing patients treated by these medical officers..

WILCOX'S BRIGADE

8th Alabama Regiment
Surgeon Robert T Royston, senior brigade medical officer.
Assistant Surgeon Daniel Parker, captured July 5, 1863.

9th Alabama Regiment
Surgeon Henry A Minor, captured July 5, 1863.
Assistant Surgeon Ewing L Thomson

10th Alabama Regiment
Surgeon William Taylor
Assistant Surgeon J G Montgomery

11th Alabama Regiment
Surgeon William Henry Sanders
Assistant Surgeon Edmund M Crews (apparently absent due to illness in July 1863)

14th Alabama Regiment
Surgeon John Brown Gaston
Assistant Surgeon John T Jones

LAW'S BRIGADE

4th Alabama Regiment
Surgeon William Oliver Hudson, senior brigade medical officer.
Assistant Surgeon William Duncan
Assistant Surgeon Charles Thomas Taliaferro
Assistant Surgeon Edwin F DeGraffenreid (acting). Captured Williamsport MD, July 13, 1863.

15th Alabama Regiment
Surgeon Joseph W Akin
Assistant Surgeon John Ignatius Davis

44th Alabama Regiment
Surgeon Benjamin F Watkins

47th Alabama Regiment
Surgeon John R Burton
Assistant Surgeon Michael A Ridgeway
Assistant Surgeon James P Cooke

48th Alabama Regiment
Assistant Surgeon Henry H Sergeant

O'NEAL'S BRIGADE

3rd Alabama Regiment
Surgeon William S Mitchell, chief medical officer of Rodes Division
Assistant Surgeon William Robinson Hardy
Assistant Surgeon Ozy Roscoe Horton
Assistant Surgeon Archibald A McQueen

5th Alabama Regiment
Surgeon Thomas Carter Hill
Assistant Surgeon John Patrick Mushat (acting)

6th Alabama Regiment
Assistant Surgeon Thaddeus J Weatherly
Assistant Surgeon Robert G Southall, captured July 5, 1863.

12th Alabama Regiment
Surgeon George Whitfield
Assistant Surgeon Jack Bryant Stinson
Assistant Surgeon John M Adams

26th Alabama Regiment
Surgeon John M Hayes, captured July 5, 1863.
Assistant Surgeon Joseph P Carter (acting), assigned July 14, 1863

ARCHER'S BRIGADE

13th Alabama Regiment
Surgeon Henry M Clarkson
Assistant Surgeon Abner E Arnold

5th Alabama Battalion
Surgeon William T. Montgomery of Maryland
Assistant Surgeon Alexander D Hamilton of Maryland
Assistant Surgeon William E Pearson