Look up your doctor’s license and medical credentials in Washington. All professions – medical doctor (physician), osteopaths, chiropractors, dentists, nurses, etc. can be searched at this license lookup site by the WA State Department of Health. Select Physician and Surgeon for MDs, Osteopathic Physician and Surgeon for DOs. Basic physician license date information, plus whether any disciplinary or enforcement actions have been taken. The discipline details are linked. Must have the correct first initial of the physician’s first name to find information.