POSITION. Floating. MOHS Medical Assistant (Mohs and General Dermatology). LOCATION: Chelmsford/ Arlington/ Natick. Job Summary. The medical/surgical assistant provides patient care support along with the physician in both our general dermatology and Mohs surgical practice. Assistants require excellent sterile technique, attention to detail and the ability to work at a fast pace. You need to possess excellent computer, communication and customer ...