What is medical assistants role in the dermatology office?

Clinical duties: Taking vital signs and height and weight, preparing the patient for the doctor's examination, taking patient history (...although the doctor I worked for preferred to do this for himself), administering shots as ordered by the doctor, venipuncture (in some offices), setting up for and assisting with minor surgeries, helping the patient feel at ease.
Administrative: Greeting patients and guests, answering phones, scheduling, accurately entering details into the offices HMR system, notifying patients of delays, insurance verification/pre-certs

and pre-auths,

stocking supplies.

Every office is different, but pretty much anything an MA is generally trained for in school, with a few skills specifically related to dermatology.