The Herzing OTA associate degree program takes an average of 24 months to complete.That means depending on when you start and how quickly you earn your certification (passing the NBCOT exam), you may be able to become a Certified Occupational Therapist Assistant (COTA) in 2 years. Learn more about the Herzing OTA programExplore Now Other Questions How can I continue advancing my nursing career? Are radiologic technologists in demand? How do you become a nurse administrator? What’s the difference between healthcare management & health information management?