Comparison of MD and DO in the United States

	M.D.	D.O.	/!\ Not defined /!\	/!\ Not defined /!\	/!\ Not defined /!\	/!\ Not defined /!\	/!\ Not defined /!\	/!\ Not defined /!\
Medical School Application service	AMCAS/TMDSAS	AACOMAS/TMDSAS	MLE, Step 2	USMLE required	COMLEX required	Board Certification	Medical specialty boards	Either M.D. or D.O. medical specialty boards
Years of medical school	4	4	residency	M.D. (ACGME)	/!\ Not defined /!\	/!\ Not defined /!\	/!\ Not defined /!\	/!\ Not defined /!\
Medical Licensing Exam (MLE) Step 1	USMLE required	/!\ Not defined /!\	/!\ Not defined /!\	/!\ Not defined /!\	/!\ Not defined /!\	/!\ Not defined /!\	/!\ Not defined /!\	/!\ Not defined /!\

Comparison of MD and DO in the United States

USMLE optional (~50%)

COMLEX required

Comparison of MD and DO in the United States

M.D. (ACGME)

D.O. (AOA)

combined M.D./D.O.

AOA approval of an ACGME program