Doctor of Osteopathic Medicine - One of the two types of fully licensed medical doctors in the United States, the other being doctors of allopathic medicine (see MD). While practicing conventional medicine much like his or her M.D. colleagues, also maintains the ability to perform osteopathic manipulative medicine (OMM), also referred to as osteopathic manipulative treatment, or technique (OMT). A small minority of osteopathic physicians use the physical manipulative medicine (OMM/OMT).
I had to go to the ER and the doctor that treated me was a DO.