Healthcare Architect

I am a registered renal nurse who is taking up architecture classes now. I am interested in this so called "healthcare architect" what does it actually mean? what is the job description?
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The best answer always comes from the source; visit the following website. However, facilities for healthcare is growing.

American College of Healthcare Architects
http://www.healtharchitects.org/ACHA/healthcare_architects.asp

The American College of Healthcare Architects provides Board Certification for Architects who practice as healthcare specialists. Our certificate holders include healthcare architects throughout the United States and Canada with specialized skills and proven expertise.

HOK Healthcare
http://www.hok.com/design/type/healthcare/

I am hope that this will get you started.