ACHA stands for American College of Healthcare Architects.
ACHA provides Board Certification for Architects who practice as healthcare specialists. Their membership includes healthcare architects throughout the United States and Canada with specialized skills and proven expertise in healthcare archtiecture.
Before earning the ACHA Board Certificate, healthcare architects must document their experience and demonstrate their skills through a computer-based examination. ACHA requires its Certificate Holders to work towards the improvement of healthcare architecture on behalf of the public, to practice in an ethical manner, to maintain high standards of specialized continuing education, and to add to the body of knowledge. ( The above description retrieved from the website: http://www.healtharchitects.org/ date: 9-3-2015. )