Well, there are many differences and similarities: both are a 4 year professional program. MD/DO have a DEA# and write prescriptions, same as with pharmacists. Pharmacists and physicians do residencies, however, the pharmacists residencies are much much shorter in length. Some of the differences: physicians are licensed to treat patients with medication/surgery/etc, pharmacists cannot. Physicians make a crap load more money, mainly due to their specialties and longer years of training. Are they considered colleagues? Yes. Are they considered equals? No, and not for a superior/inferior thing, but because physicians are more highly trained. Anybody that tries to bicker with that on this post are kidding themselves. That is the truth.