Register with confidence because Dignity College of Healthcare online medical assistant program curriculum is nationally accredited and a student that has successfully completed this program is eligible to sit for the national certification exams. Dignity College of Healthcare Clinical Medical Assisting program is nationally accredited. It is a 480 hour program. It is a 6- month program. At the end of the program study, the student will be eligible to sit for the national certification exams for: 1. Medical Administrative Assistants 2. Clinical Medical Assistants