I am in agreement with Dr. Blanchard's request.  There is no logical reason for dentist in the Commonwealth to post their DEA license in view of the public. Having it available for insception and certifing that its valid should be enough safeguard patients.  If a doctor has multiple offices it should be enough that it just remain in one location and it be made available upon request, or that he/she be required to log into the DEA website to download a fresh copy.