I have gotten it to work, and it works well. AHLTA and Essentris are faster than in the hospital (no shock there). Can't get Impax to work at all. You need the specific link for your hospital. You need the most up to date version of Citrix Receiver and be sure it is compatible with El Capitan. Google chrome works and Safari does not, and use Incognito mode in Google Chrome (Click on three bars in top right corner, 'Open new incognito window'). You need a card reader, and it needs to work. For your ID check the one that has email in front of it.
I sometimes have to restart for it to work. I couldn't believe it when it worked.
Addendum: Just tried it again to be sure it wasn't a dream. It works.