Atrium Health Portal Login Sign in & manage My Atrium . Health (1 days ago) 1 Atrium Health Portal Login. 1.1 Why there is a need of article like this to explain the way to access the Atrium Health Portal : 2 Steps to Login to the official My Atrium Web Portal; Atrium Health Portal Login.The Atirum Health online portal is available 24/7. Enter your user id and password to this official website ....