| ACMD | associate chief medical director |
|---|---|
| ACOS | American College of Osteopathic Surgeons; associate chief of staff |
| ACOS/AC | associate chief of staff for ambulatory care |
| AD | accident dispensary; acetate dialysis; active disease; acute dermatomyositis; addict, addiction; ade... |
| ADN | antideoxyribonuclease; aortic depressor nerve; associate degree in nursing |