I don't think it should vary from dispensary to dispensary much for the requirements to be brought. Make sure to have: your valid Colorado I.D and or proof of residency, the money for your doctor's evaluation and office fees, as well as any medical records that may help you attain your card. I recently just got mine, the process was very simple, smooth and clean. I as well as others and even the doctors office itself, are here to help you answer any furthering questions, comments or concerns you may have.
Best wishes yo