Look up a MD physician medical license here. Maryland Board of Physicians public profile system works, but gives the impression they don’t want to help you too much. You need to know the doctor’s first name, or this may be very time consuming. Multiple professions (such as Respiratory Care or radiology techs) are co-mingled with the physician licenses. If the name is in CAPITAL letters, it probably is NOT a doctor. Maryland Board of Physicians, MBP.